Tenet || Exploring the Algorithm and World Device

********************[spoilers]**************************
Scientist Barbara Exploring the Algorithm and how a World Device may work in the Film TENET.
Voiced by Sarah Nightingale
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Music: TENET Official Soundtrack FROM MUMBAI TO AMALFI
Thanks to all the peeps at / tenet
30 Free Cinematic Sounds | Inspired by TENET OST | SOLARIS SFX Library | Premiere Cuts Store
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Clips used:
Tenet
“do you remember me ” starring clÉmence poÉsy
Noah Movie CLIP - Creation Sequence (2014) - Darren Aronofsky Movie HD
2012 (2009) - The Arks Scene (9/10) | Movieclips
The Bourne Legacy (3/8) Movie CLIP - Laboratory Massacre (2012) HD
Area 51 (2015) - The Horrors in the Lab Scene (6/10) | Movieclips
A.I. - Artificial Intelligence" (Steven Spielberg, 2001)

[@jerrysstories711]

Man, I just love knowing that there's someone else out there still as obsessed with this masterpiece movie as I am.

[@ORTyOW]

YES!!!

[@Holoflux]

I catch myself thinking about inversion and its concept way too often

[@ORTyOW]

@@Holoflux haha true

[@andrewhoover2735]

Same

[@ORTyOW]

@@andrewhoover2735 yeah man, I am inspired to make a Tenet-like game, currently learning Unreal Engine 5

[@djeto2525]

"Ignorance is our ammunition", that's relevant to our current times.

[@Yoyomo124]

I’m loving the character role play going on in this video. Makes me feel like I’m in the TeneT universe.

[@WelbyCoffeeSpill]

Thanks. I wanted it to be like Barbara, the scientist, was explaining it to you as if You were a new recruit or something. I was lucky to find someone willing and able to do an impression of the real actress. :)

[@theheeze]

Tenet real begs for a sequel. I need more inverted fight scenes 😩

[@Yoyomo124]

@@theheeze you and me both brother

[@asat103]

i was indeed waiting for a sequel years ago

[@tamalpodrido8960]

@@WelbyCoffeeSpill that was an impression? Thought you used AI lol

[@noice7381]

After all this time, there are still fascinating things to explore about this movie and its concepts. All your Tenet videos serve as a vital companion to the film itself. great work!

[@WelbyCoffeeSpill]

For sure! This movie sparks so many ideas and 'what ifs,...'. I think there is more to have fun with. :)

[@dd.4910]

Well said, Nolan outsmarted everyone with this movie and we're still playing catchup

[@jorgereyna1796]

@@dd.4910 Yes absolutely

[@billj4525]

@@dd.4910 Outsmarted is not the right word for it, but he made it a very complex interesting movie with many interpretations. People are still coming up with theories about it, which is awesome. I personally think it's a masterpiece. I know what you mean though, some people get offended that it's too complicated, and aren't willing to even try to understand it, so they don't like the movie and give it a bad review, so in a sense they feel outsmarted, but it's a movie, and it's not like that, so it really shouldn't affect people like that. It's a fantastic movie nonetheless.

[@karthikr561]

5:55 the guest entry of Endurance was 🔥

[@sethemersondavis3145]

Right ...caught that myself too

[@OrangeDrinkMusic]

7:10 me, half-asleep, watching Welby videos trying to understand it all

[@1polyron1]

I'm not good at Physics but when someone can lay out and breakdown concepts in a digestible way with unique presentation while talking about the lore of a movie you loved, there's no way not to get pumped for learning it. Thank you Welby. If nobody else loves these videos, I do.

[@matthewgough9533]

NO WAY!!! You're back! This evening I started building a Tenet themed geocache (GC9TYGJ) that replicates the container young Sator found in Stalsk12 and lo and behold - a new Welby Tenet video comes out!

[@WelbyCoffeeSpill]

That sounds like an awesome idea. Like a tenet themed cache in your room yo store stuff. I'd put that in my man cave.

[@soufian2733]

I cannot get enough of this movie lol the concepts and technology are so damn fascinating no matter how unbelievable it all is… I would do anything to get a movie/show/book about the "future Oppenheimer" who invented the Algorithm

[@drbeanut]

I have seen this film 8 times and it never gets old. I find it interesting that Nolan’s next film is the real Oppenheimer... its like one idea leads to the next with him. On the algorithm, I find it very interesting in the first place that an “algorithm” is needed to invert the whole world. Moreover, why is it stored in 9 hard components with unique shapes? It’s as if each component is itself a mechanism in the machine that can invert the world. As a physicist, I have a whole theory of how a Turnstile works to begin with. Effectively, the Turnstile can be viewed as a Matter/Anti-matter pair production/annihilation device. We either view two versions exit the Turnstile (pair-production) or two versions enter and cease (annihilation). When matter and antimatter annihilate, there is energy released in the form of massless bosons (such as light). Likewise, these same arbitrary bosons can “decay” into a matter & antimatter particle pair. The true nature of anything that exits the Turnstile is encapsulated in the bosons from which their inverted/regular versions are produced. This makes me think that the characters of this plot are actually designed and blueprints from the future, where technology exists to create a Boson Blueprint of nearly anything, even people. These blueprints are encapsulated within an algorithm that tells a turnstile how to construct the entity. The global algorithm, I believe, is a boson blueprint of the entire world. A large enough Turnstile could construct such a world. Then take a bunch of people from the old world, and send them to the inverted world. From the perspective of the Old Worlders living on the Inverted world, they are still moving forward in time, but the world is moving backwards ... all the man made destruction reversing... rivers filling back up... forests coming back to life... while they leave the Old World to rot. But since this Inverted World is traveling back in time, it is bound to meet a past version of the Old World. However, the Old Worlders living on the Inverted World believe that since they are still progressing into the future the resulting Annihilation will only occur in the past, and not effect them (this is where something like the Grandfather paradox comes into play). However, in the past, at the time of the Film itself, our protagonists believe the inverted world will meet up with them, and cause annihilation with their world. It’s a mega-mind-fuck.

[@m.kirori2411]

The Future Oppenheimer is the 'past' Oppenheimmer atleast in Nolan filmography terms.

[@GelatinPangolin]

In a time of AI voices, its really cool of you to actually hire a voice actor for a video like this.

[@johnnykage3903]

I’m a little late to your videos but I’m loving them. I came here from 2024 and can’t wait until 2020 to finally see Tenet in the theater like it was meant to be enjoyed.

[@WelbyCoffeeSpill]

Thanks! Just be warned, some theaters may be closed in your area in 2020. We had a bit of a pandemic :)

[@Ariccio123]

Yeah, I don't think you'll want to go *all the way* back to 2020, wasn't a great year 🤣

[@ORTyOW]

Lmao

[@WelbyCoffeeSpill]

Hey @johnnykage3903 , have a safe trip! ;p

[@DeeGreene]

These videos are incredible!

[@treng9349]

Your work is crazy Welby. You must be one of the filmmaker of Tenet

[@basolarte]

‮man, i'm so addicted to your channel

[@secret222]

wow that was so impressive. so much obvious work and time put into making this. even the voice over actress sounds very similar to the real actress from the movie. thank you very much!

[@TheRealToaster2]

Thank you for continuing to make Tenet videos! This sheds some light on how the world device might work, and it helped me understand the possible effects it would have had if it were activated.

[@1polyron1]

3:30 Omg I just understood this thanks to that. I feel what Neil was saying about them having the dominant entropy went over my head. Now I can have fun with the implications of that.

[@thewonders31]

Recently just watched TENET, and making me 43% more of understanding of the movie, I'm really really relieved to know that someone out there literally making a KZbin channel dedicated to explain TENET and making 3D rendering too.. Cheers to you, lad!

[@jonsaboe5372]

Would love to see something on how an equation COULD be converted to a 3-dimensional physical object.

[@dd.4910]

THe narration is incredibly gripping and relaxing. Reminds me of The Animatrix second renaissance

[@newspeaker1769]

One of the few KZbin notifications which excites me greatly. Quality is just getting better and better. I might watch the movie again later. Thank you :)

[@z.y.r.o]

Damn , I love the dedication ❤. I subbed

[@tykjenffs]

Holy shit what a great video! Have recently begun deep diving back into Tenet again and there's nothing like stumbling across greatness. Thank you!

[@vetoland92]

Thank you so much for these. I know these prob take such a long time to make so I appreciate your dedication/hard work. Been hooked since the first one. No doubt you're making Nolan proud!

[@tienshan9819]

Yep, not sure who's more brilliant: Nolan for cooking this up or you for figuring it out.

[@cnostech2175]

Everytime when I think that now I totally understood this movie, there's always something that I didn't understand.

[@Jigsawn2]

Amazing video but most of all massive props for such a huge step up in presentation from our faithful static 3D models zipping around. Even going to the effort of getting a voice actor who sounds the same as the scientist, amazing work!

[@jeo228]

Its a shame Nolan doesn't do sequels.

[@waseemalibrahim295]

This is the best thing I've seen in a while

[@Run_GMD]

Cute touch to add the Endurance from Interstellar at 6:00. Those two movies are opposites in some ways. In Interstellar future humans help save us from environmental disaster. In Tenet future humans try to destroy us to avert environmental disaster. It always pays to be kind to our future selves.🙂

[@curtischase2126]

This video is awesome. Had to watch it twice but it then it clicked. Thanks for all your Tenet videos.

[@AndileJGumbo]

One day, Nolan will watch this channel and think, "This is giving me an idea for a movie!"

[@farihbenzema3086]

then he using the machine back to past to make the movie

[@RakibErick]

it is nolan whos doing all these work. he runs this channel bro

[@VelocityLP]

I love your World Device concept you modelled at 5:10, looks like a combo of giant algorithm and turnstile pieces :P

[@Ghosthound_X]

Man I love this movie. What other movie in recent years has offered this much post discussion content. How in the world did Christopher Nolan even come up with such a wild concept.

[@shizzyfinn]

I'd bet he was sitting in an editing bay, rewinding footage on-screen, when the concept occurred to him

[@MultifacetedVisualesMedia]

Direct to my fave videos, 10/10.

[@Leadcops]

Babe wake up the goat is back

[@johnnythundertherevenger945]

Invert the Earth = Invert the spin of the rotation at the same velocity of the rotation, killing everyone

[@Suppise152]

I love how tenet is so confused that there’s a channel dedicated to explaining 2 years after it’s release

[@brotherWesley]

You're not alone. This movie gets deeper the more you watch it.

[@OrangeDrinkMusic]

Great job on that gas mask, I thought it was real

[@WelbyCoffeeSpill]

Thanks. I wanted more but finding good usable clips of the actress was tough!

[@creedence111]

I have watched all of the videos on this channel and Tenet still goes over my head. I literally need a dumbed down layman's explanation of how inversion works. Kudos to Welby for these awesome videos.

[@LegoAlex99]

Fantastic video as always also great choice and making it seem part of the Tenet universe itself with the female scientist voice explaining these concepts

[@WelbyCoffeeSpill]

Thanks. By having it narrated i could get across so much more ideas than trying to use Text. This is my first video using voice. I am pretty happy with the results. Makes me want to do more with it.

[@amritvermagkp]

I'm literally speechless

[@hexagonproductions2019]

Return of the king!

[@MandelaDefect]

So, you know that scene where the solider explains “This is a viewing window. If you do not see yourself coming out, do not go in…if you don’t see yourself then you’re not coming out.”. Imo that leaves the possibility open for multi-verse travel. You leave the primary timeline for one where you can make changes to the past (changes from the primary at least). Because technically you weren’t there to observe them the first time in the new universe. Edit: clarification&grammar

[@WelbyCoffeeSpill]

or,....you just get fried inside the machine because something went wrong or you were trying to troll the universe and it won't let you. :)

[@MandelaDefect]

@@WelbyCoffeeSpill lol yeah. I was thinking that since they suggest there’s a kind of “radiation” in the machine. Thats def the likely possibility. But since there’s mention of multiverse theory my head cannon is going with multiverse travel

[@WelbyCoffeeSpill]

@@MandelaDefect Neil does bring up the multiverse so there is precedence for it and there may be something to it. I'm still trying to work how that would be experienced :)

[@ChilledBacon]

i think its a safety thing or it came up as a worry thing. if you dont see yourself coming out you never went into it in the first place. its already a decision thats been made by you, and you cant change that. if you see yourself coming out and decide not to, some force will force you into it no matter what as its already something thats happened. whats happened already happened?

[@maujo2009]

Nolan should see this series.

[@omarsherief5690]

Her voice sounds like the scientist in the movie, great 3d work and explanation. I always wondered why the bullet only shows up on the glass right before it’s reversed, why these things aren’t permanently visible, for example the glass of the car’s mirror, starts to break right before it’s reversed. So what I got from this video is the reason they disappear is because they’re running in the opposite direction of the dominant entropy, so at some point they disappear and the “normal entropy” dominates. Am I right?

[@WelbyCoffeeSpill]

So far that seems to be the consensus. I have other videos exploring those ideas too. The thing about the World Device is, it is not a normal turnstile. We really have no idea exactly how it works. the rules of what we saw with turnstiles in the film may not apply to it. Probably similar, but with much higher energies.

[@omarsherief5690]

@@WelbyCoffeeSpill Thank you, keep it up.

[@izzynobre]

Your videos are amazing.

[@han-gyoulim6786]

Your videos just keep surprising me in such a satisfying way sir! Thank you for not losing your passion in this masterpiece. Please keep going! And if you have any idea of what was happening in the icebreaker (I just feel a little bit lost tracing the character’s worldline in there) please make a video about it. Thank you! :)

[@WelbyCoffeeSpill]

Icebreaker. Great idea!

[@thiagofeliciano6090]

Thats a nice video bro. Keep the good work 🙏🏿

[@WelbyCoffeeSpill]

Thanks!

[@tablebook-dg6vh]

Thanks so much. I need to watch you videos multiple times before watching movie again

[@lawrencefrost9063]

I was sure I had understood this movie. Thanks for doing this. Now I think I do.

[@audiodead7302]

I agree with the last 90 secs of the video. If we live in a block universe, then nothing ever changes. Events at all moments in time are already determined. Fixed.

[@alsa4real]

You're back!!!

[@ZChronicNebula]

Masterful directing. Film is surreal! Don't try to understand it, feel it...

[@adrianbardon2819]

This is great, thanks for this WelbyReddit.

[@galaxianhero5767]

He’s back :)

[@GuyBehindAComputer]

Keep them videos coming Welby!

[@j.k.1239]

Appreciate the video.

[@thechaosinsurgency1578]

Welbys back!!!!!!!

[@choicemeatrandy6572]

I love this channel so much.

[@WaldemarPerezJr]

Excellent analysis. I want make a game based around time inversion. But can't quit get my head around the idea. Reminds me of the last level in the game Braid.

[@WelbyCoffeeSpill]

that would be super tricky. I think at best you can capture the spirit of the mechanic, since you can't predict what a player would do before they do it. Or you abstract it enough. Maybe just a playback of your first run while you navigate it inverted but you can't 'change' anything, but need to still avoid dying or solve some jumping puzzle.

[@WaldemarPerezJr]

@@WelbyCoffeeSpill Similar to how Valve solved carrying the Cube through the portals program. They just made Dups. But yes, I think solution would have to arrive at by repeated testing.

[@WelbyCoffeeSpill]

@@WaldemarPerezJr It's tough to do without feeling like you railroad the player but maybe, You playthrough as normal red and engage some blue inverted 'you', which is scripted. You then do other stuff , hoping the player doesn't remember 'exactly' what the AI did. Then when it is your turn to be the inverted agent, you script the event to heavily make the player do the same things, but if the player deviates some other state in the world changes , bad or good, that you couldn't predict. So it is not exactly a "What's happened happened" QT event game. But more like you have the option to repeat it correctly or risk some other state making the game harder. And if you do it correctly, it turns out you do stuff while inverted that you didn't notice in normal time that helps you later on. Like spotting the 'handoff' as Sator did. :)

[@Sedona_FD3S]

I’m here for this!

[@TuriGamer]

I love movies where the heros stop the villain from saving the world by very very gray means and pose no alternative solution

[@DavidSGrop]

Thanks, you always make me understand even less.

[@denniskiruai9125]

2:08⏳♾️⚕️⚛️🔮 ignorance is our ammunition

[@knightoflambda]

I appreciate your exposition! Your explanations are fascinating

[@ThaTeeDee]

Loved the Interstellar reference at 5:56. Same universe, huh? ;-)

[@WelbyCoffeeSpill]

Just having fun. :)

[@1polyron1]

These videos remind me of another KZbinr Physics Videos by Eugene Khutoryansky. Both educational, both use animation and editing, and both unmatched in presentation.

[@WelbyCoffeeSpill]

Oh, I have seen his vids too! Every night I fall down the rabbit hole of youtube vids on this stuff :)

[@dazzaboy04]

And to think that my mates didn't beleive me when I explained to them that due to the forwards moving entropic wind, those bullet holes manifested. TP's arm is a classic example. He begins to feel the pain. Then the pain gradually gets worse. Then he's bleeding. Then his forward moving self stabs him essentially in reverse, healing him

[@Yoyomo124]

Yesss more TeneT content

[@seanboyd5242]

My favourite movie and my favourite KZbin account

[@jerrysstories711]

I know that your forward and backward selves much never touch because it would cause annihilation, but my two selves would definitely exchange nods through the window, perhaps even double finger guns or a flirtatious wink.

[@jbtechcon7434]

I'm not gonna lie, if my two selves could, we'd get a bed and some lube and go to town. It's not gay when it's just you!

[@briansinger5258]

The bad guys are the good guys. ;) The future is more important than the past.

[@WelbyCoffeeSpill]

yeah,...you kind of can't blame them for trying.

[@JT-si6bl]

Fabulous work here. Thank you. How, once inverted, would an individual travel back in time to a specific date? EG future Neil meeting PT in Mumbai. Or Kat's inversion in Oslo would only be possible a week ago. It seems that in the shipping container, the 3 of them time travel. Then it becomes apparent the turnstile allows time travel to multiple dates, as well as entropic inversion. I just LOVE this film... as much as the Blues Brothers!

[@WelbyCoffeeSpill]

Thanks! The specific date all depends on whenever you want to 'Re-Vert" back to normal. We live life normally. 1 second per second, moving forward through time. In 24 hours, I will be in Tomorrow. When you are inverted, you Still live 1 second per second, but moving backwards through time. If you are inverted, 24 hours from now, you will be in Yesterday. Just don't forget your sunglasses. ;p

[@sethemersondavis3145]

First time watching this video just now noticed the endurance spaceship from Nolan's "Intersteller" is in the background at 8 minutes into the video ... And now pressing play 😂

[@dewikingdon4367]

If you think about it, Neil is living proof of the last theory discussed “whatever’s happened, happened”. He went back to the past to recruit the protagonist for his story to work, and to save max (himself).

[@richardwilliams8008]

This is your best video yet - the amazing graphics and smooth narration is simply top-notch. So glad you cleared up what the Algorithm is as so many people think that was the doomsday device. Thank you for your time and effort and it's good to see your work again. 💯

[@JudgeDredd_]

“…The detritus of a coming war.”

[@astraluniverse5928]

mind = blown

[@zaylabzz7724]

Theory:- The female scientist in the beginning of the movie is going to be the that future rebel female scientist (as said by priya).

[@WelbyCoffeeSpill]

Priya mentions that she is "generations" from now. So it is most likely not Barbara, the scientist we see in the film. Some, however, have speculated that it could be her daughter or grand-daughter, as she is clearly pregnant.

[@westmcgee9320]

@@WelbyCoffeeSpill I didn’t notice her pregnancy despite my double digit rewatches. Sheesh. Oh well. Another reason to watch, again.

[@immanuelshiweda1567]

This movie is good but it's super confusing.. 1st time I watched it in the cinema I had no idea what was going on All I knew is that alot of time travel was going on, more time travel then I've seen in any movie. This movie is so perplexing that at some point you'd want to have subtitles to understand.. It tool me more then 8 times of watching to fully comprehend it

[@westmcgee9320]

At 2:25 she says that the scientist knows that if she inverts the algorithm, nothing can be done to change that. Incorrect. The future believes they CAN change the past. Tenet is the team that doesn’t…but won’t risk being wrong. In either case, sending it into the past is only helpful if the Furure never finds out about it. Once they did, I’ve always wondered why they didn’t send someone in to get it. If the scientist was able to put it somewhere, they’d be able to go back and un-put it there.

[@rneweyes]

I find myself the bullet hole

[@denylamber7462]

they live in the stable reality, where everything is a loop. The other realities was destroyed by paradox neither the past try to change things or the future won.

[@ChilledBacon]

the more i think about the possibility of the inverting time time travel in such a way you see people seemingly in reverse the more i realize it isnt possible. if you revert somebody, you revert them, their clothes, and the air around them. those molecules will immediately come into contact with normal air molecules and either decimate them instantly or something (idk). but if they dont get destroyed they still have to move the past molecules in some form or matter essentially changing the past? this makes sense in my head idk if its translating well

[@WelbyCoffeeSpill]

There is only one mention in the film about particle annihilation and I agree, it complicates things. I wish they left it out. People should immediately explode when inverting. Particles don't distinguish between you or an object at that scale. All it knows is one is normal and one is inverted. I dont know. Maybe at a macro scale it can tell, but I'd rather not go that far.

[@ChilledBacon]

@@WelbyCoffeeSpill it was probably a cheap plot fix as to why you don’t touch yourself, but it doesn’t seem to matter considering they basically went and said “oh yea don’t go near past self you might fuck up future” which can’t happen anyways aaaaaaaaaaaaaaaa

[@ChilledBacon]

@@WelbyCoffeeSpill unless the molecules have its own time signature/frequency and only gets destroyed when it’s reversed time signature (or frequency) cancels it out to stop it from existing? I think ima just chalk it up to a plot hole that doesn’t need fixing.

[@WelbyCoffeeSpill]

@@ChilledBacon I'd need to research that more before I start thinking about 'time signatures ". But I think you got it right last post in that it can't happen. Touching and destroying your past self would make a paradox of how you even got there to touch him in the first place. The only way it could work is if Only the 'latest' version of you is the one destroyed. But you can't fool the universe, so maybe this is a situation where you don't see yourself in the proving window.

[@fynngilburn7258]

I've always found this one flaw in this system. what happens if you consciously go against inverted clues? if i reach a hand out to catch an inverted object, what if at the last second, i move my hand? would it find some way to work? if inverted objects already know what I'm going to do, what's stopping me from not fulfilling that? I've never understood.

[@WelbyCoffeeSpill]

Don't think of it as an object "knowing" what you will do. Think about what you Will do. The answer is in your question. " What if I do not intend to catch it?" Answer: then nothing will happen. You will hold your hand out and the object would Never move to you in the first place.

[@IvanVAmado]

They show it in the movie when the protagonist tries to grab the bullet, the scientist tells him pretend as if he was letting go of it, from the protagonist's perspective, he was catching the bullet but from the bullet's perspective, he was releasing it.

[@choicemeatrandy6572]

Interstellar: the future is trying to help us because we messed things up Tenet: THE FUTURE IS TRYING TO KILL US CAUSE WE MESSED IT ALL UP

[@cosmicvoidtree]

Here’s an idea that I haven’t really fully thought out yet. Would it have been better to keep some parts of the algorithm flowing forwards, or was the scientist right to have them all going back.

[@westmcgee9320]

Interesting thought. Personally, I don’t think her approach had any value. The bad guys could’ve just gone back to when she created it and before she killed herself, to take action. And the idea that she didn’t think they could change the outcome is inconsistent with the future’s perspective and intent. Their whole goal is to change the past. And if they’ve come this far, one would think they know they can do it and have. But observable moments in the movie do not confirm this is possible so…

[@pouzeot]

I still can’t understand why disintegration of the algorithm without a trace (in molten steel for example, like in T2) is less preferable than flying around the globe 9 times + giving enemy a chance to retrieve it.

[@Sarbury12]

What would happen if a cup of black coffee moving forward in time was mixed with half'n'half that was inverted backwards in time? What if I drank it?

[@WelbyCoffeeSpill]

I think it wouldn't make sense. You'd basically be stepping on the cream's past. At some point in your future, that cream was put into a turnstile and inverted. So if you destroy it, it would be near impossible for it to be inverted in the first place. It is a grandfather paradox. I just assume the situation would never even occur. You would never find an inverted creamer if your intent is to cause a paradox. Even if you purposely take creamer to a turnstile and invert it, since you didn't drink it in your past, it won't be drunk in its future.

[@Sarbury12]

@@WelbyCoffeeSpill it’s possible if the forward coffee is mixed with the inverted half n half. To the forward moving person, there would be a cup with some half n half in it. Then black coffee would get poured into it, and it would appear mixed like magic. Then you’d swirl it with a spoon which would make it get less mixed, and then you’d hold the inverted carton over it and watch the half n half rise up pure white back into the carton. An inverted person would see the half n half pour into the coffee and mix like normal. But then they’d see the black coffee rise up out of the cup leaving only pure white half n half. Where it gets weird is if someone tries to drink the coffee. Are you saying this just wouldn’t happen? That it would be impossible for it to happen?

[@WelbyCoffeeSpill]

@@Sarbury12 Well sure. A consistent scenario can be constructed for it to be possible to "mix" inverted cream as you laid out. I even wanna say you should be able to drink it. But again, I can't see that scenario logically happening in the first place. From the cream's perspective , it was inverted, and then brought to the table. The inverted cream's worldline has just as much relevance as your forward worldline. And If you drink it, what kind of scenario would allow it to get back , in tact , to the turnstile from our point of view? We "Could" invoke some magical " entropic wind". Say you drink it. ok, you are exerting your forward forces on it now. It is being digested into it's own past. Much like the bullet holes in the wall. The bullet holes are not inverted , yet an inverted bullet smashed it into the past, which is why we see it there mysteriously before it gets unshot and fixed. Was the wall built with a hole? Probably not. So the entropic wind of forward entropy erases the hole in the past. Similarly, the cream was probably not created in your stomach. Soo,..if we wanna try that on the cream, you'd drink it. But at some point it would need to dematerialize, and end up back on the table where it can be backward walked to a turnstile. Meaning, from the cream's perspective, it was inverted, placed on the table, dematerialized. Materialized in your stomach, undrank, and back on the table. Spooky!

[@Sarbury12]

@@WelbyCoffeeSpill if I ever meet Christopher Nolan I’m bringing this up.

[@thalysnatanael]

I just watched the movie, it's the 4th time, and I'm pretty sure I found a glaring mistake in the movie about- What happened, happened-. A short time ago a youtube channel made an explanatory video of tenet, I asked about changing the past, I was answered that it was impossible to happen. But I am even more convinced that yes it could happen and it was done. The scene in question is the last one. When Kat, -who I don't know which kat is, the cell phone she uses was handed over by the protagonist, the inverted kat-. So kat is going to school to pick up her son, and she notices a strange car, she leaves a voicemail, i thought it was a realtime call but it was a voicemail. And boom!; the protagonist gets into the car where Priya was and kills her. Happy ending! But wait, look at the complexity of the scene, she arrives at school and witnesses a dark car, takes her cell phone and leaves the message recorded, ok, so the Protagonist should be following her all the time! Well, that's the only way to explain that there would be no change in the past. There was no time for him to get there! And the way he was violent with Priya - he didn't even try to negotiate -. He just killed it! This implies that Kat dies, the protagonist receives the message, goes back in time and saves her. Am I right or wrong? So the algorithm gave the option to change the time, which was avoided as much as possible. Neil was afraid of it, but it could be done.

[@WelbyCoffeeSpill]

The Protagonist doesn't need to follow her the whole time. She recorded her message Monday afternoon. The Protagonist received it on Tuesday. The Protagonist inverts to Monday Morning, before Kat even made the recording, then reverts and goes to wait for Priya's car. Sneaks in, and kills her. The Protagonist was there waiting even before Kat noticed the car. There is never a time where she was killed.

[@thalysnatanael]

@@WelbyCoffeeSpill Not in this alternate universe! But in the original yes. Why did the protagonist go there then? If she wouldn't die? The moment before he gets in the car, Priya's security guard is already leaving to kill Kat. There was indeed a change in the past, which was not explained if there was a creation of a new future.

[@WelbyCoffeeSpill]

@@thalysnatanael "Why did the protagonist go there then? " I think it is apparent, he went there to save her "Before" they could do it. Just because he may know she didn't die( presumably because he knew he intended to go back) , it is not an excuse to do nothing. He still wanted to go back and save her. It is a similar situation with Neil. Neil knew, or suspected, he would die going back,..but he still went because he is that kind of guy. I am not adverse to 'alternate' timelines,..it's just that in this film, they make it work without it and don't really demonstrate a need for it.

[@thalysnatanael]

@@WelbyCoffeeSpill 1: What does Posterity mean? In the scene before the war, the Protagonist and the inverted Kat talk. So he hands her the cell phone, with a single function, to report everything suspicious. That Posterity would hear the call. On the way to school Kat calls, and says: It could be nothing but there's a car with tinted glass near the school. 2: How did the protagonist know there was someone with a gun inside the car? Or the Protagonist became a serial killer and kills everyone, after kat leaves a message, or he knew Priya was in the car. 3: What will define whether kat died or not is when Protagonist heard the audio for the first time.

[@thalysnatanael]

And to finish my line of reasoning. About the alternate universe. There's only one way for Kat not to die, the protagonist needs to stay close to Turnstile, always! Kat would die less than 1 minute after leaving the recorded audio. Protagonist would receive the audio, listened and jumped on Turnstile, with that she never dies. Well, he comes back and kills everyone, but how did he know there was someone with a gun inside? It was tinted glass!

[@runcmd1419]

If you take the future people point of view the people of the present cling to existing in a doomed future instead of taking a chance on a paradise for another generation.

[@irvanmaulana1302]

Bruh thanks to you I don't have to explain this to my wife

[@ORTyOW]

Ur genius

[@atrocitasinterfector]

Holy shit

[@scpkira1213]

We need a tenet anime

[@DetroitSki]

Maaaaaan WHAT?!?! 😂😂😂

[@Ddansk1111]

With the concept of what's already happened has happened, does that mean even at the end of the movie, the the present will continue the path of environmental collapse that has happened in the future? Since it seems the time line is linear (and not multiversal).

[@WelbyCoffeeSpill]

Seems that way, yeah. The reason Tenet exists is to keep the future from destroying us in the past. Which they will always lose otherwise they'd have no reason to try in the first place. Kinda bleak, eh. If anything can be done to fix it, it would have to have happened 'after' the future's failed attempts.

[@jamesg871]

Who else is here after just watching Tenet or after watching clips on KZbin.