Normally a fan of your videos, but not in this case. The problem I see with this, is that there is no margin for error from either yourself or the other road users. Filtering at this speed is pure lunancy.
@iamnicoalfonso10 ай бұрын
#NoMistakes
@appetit261910 ай бұрын
hell yeah
@roadcyclist110 ай бұрын
Then stop watching. Cya!
@Apodexis10 ай бұрын
@@roadcyclist1 He's right though
@BananaChipzzz10 ай бұрын
Amen. Safa is a moron who when (not if) he becomes roadkill everyone will go “hmm, that makes sense”.
@AzeemLive10 ай бұрын
my heart rate is higher than Safa's HR while watching all the close calls😅 what a ride (y)
@arthurd64959 ай бұрын
🤣🤣
@Nahtano79 ай бұрын
U should see terry b safa brian fixed gear...
@aighimself8 ай бұрын
Am just shouting here lol
@ballgame32737 ай бұрын
The bad boy of cycling 😂
@gem31324 ай бұрын
Organ donors, yeah!!!!
@SonnyDarvishzadeh10 ай бұрын
18:50 🤣🤣 best part!
@mosharafshahid164010 ай бұрын
Yup I noticed too
@imjonathan674510 ай бұрын
its a trap!
@nachointhecloud9 ай бұрын
😂
@Tanner_o9 ай бұрын
Safa: Oh 😮
@DonaldKim339 ай бұрын
ㅋㅋㅋㅋㅋㅋㅋㅋㅋ
@nj2s0N10 ай бұрын
Safa, please be safe. wanna see lot of videos of you 2024 and ahead. dont take unnecessary risks
@roadcyclist110 ай бұрын
Are you his mother?
@frazebean511710 ай бұрын
@@roadcyclist1are you his girlfriend? Why are you dickriding him in the comments section? Keep coping as much as you want but the reality is if Safa keeps doing crazy things like this he will be killed one day.
@briandarnell18099 ай бұрын
@@roadcyclist1 or maybe he had friends with mad skillz who are no longer with us and knows how quickly sh*t happens no matter your reaction speed.
@ofpreybird9 ай бұрын
@nj2s0N agree with you. I love that speed, but the risks that he took are unnecessary
@jinathosain97516 ай бұрын
@@briandarnell1809 yeah bro you're completely right 👍🏻❤
@ernestopreciado489510 ай бұрын
You made in 20 minutes what an average daily commuter in that location does in 1 to 3 hours. But at the cost of quite a serious gamble 💀
@dannyphantom1216 ай бұрын
40minutes* the start of the vid was cut, full vid on Patreon.
@NicholasFernstrum3 ай бұрын
16:32 there was a cop there to the left
@tdgdbs19 ай бұрын
You won't live long riding like this; I've been riding for 40 years and had quite a few crashes, but none I can blame anyone but my stupidity!
@AlaaElBatran27 ай бұрын
yolo
@PALADINKILLIAN-14033 ай бұрын
moan about it old timer
@redetrigan2 ай бұрын
First time on the channel?
@СашаИванов-у2ц3с2 ай бұрын
Приезжай вна Украину,где все ненавидят всех .И будешь не виноват в половине своих аварий.Тебя переедут,подставят,задавят,не заметят.Специально прижмут к бровке,автобусу,унизят.
@philippe_198417 күн бұрын
I worked as a messenger for over ten years. For most, riding like this is part and parcel of working to individual potential. The rider in the video is highly experienced.
@lucianam.angelesgonzalez84089 ай бұрын
I'm a cyclist like the majority of this channel's viewers, but I'll never ride routes or highways (except only 4 cars uses it for hour).. that's CAR territory.. if it has a bike line then ride on the bike line, roads, but highway? Nope. You put people and yourself in danger. More if you crash with a motorcycle at 100km/h (not even a car), guess who'll be dead -_-
@SonnyDarvishzadeh10 ай бұрын
My heart rate was jumping between 120 and 170 watching this. You should start putting "viewer discretion is advised" on your videos 😂
@dejanajs10 ай бұрын
also "dont try this at home"
@filda20059 ай бұрын
@@dejanajsmeant, don't try this outside ;)
@CharlesM2367 ай бұрын
@@filda2005can I do indoors awesome 🤔🧩☠️💯🤬
@jharricam10 ай бұрын
I love your videos Brian, they contributed to getting me into cycling. You are a beast but please stay safe! Very little margin for error in this video. 4:50 brown pants time!
@juampi467 ай бұрын
I have watched 3 videos of this channel and WOW. People is amazing!
@largadeugnt9 ай бұрын
You guys are nuts. Going through all that heavy traffic swaying and tight passing makes me truly apprehensive and nervous. What a cycling day you got there!
@skankhuntfortytwo91529 ай бұрын
damn bro you are crazy! i wouldnt even fathom myself riding like that, too dangerous, a lot of drivers, motorcyclists, and even pedestrians tend to be so unpredictable and behave in erratic manners, people here usually do not obey traffic laws and riding sometimes its very risky, yet you have the courage and the skills and maybe a spark of luck, because for real you never know whats gonna happen next or whats around a blind spot. amazing what you do, i was watching this amused and tense because Mexico City is a very hectic, unpredictable and chaotic enviroment. i wish you all the best, i wish that you are always safe in your trips, you had some really close calls. you are crazy dude, amazing!
@Nikica35810 ай бұрын
Damn, this guy reads roads and drivers like a book, hats off Brian.
@timtaylor959010 ай бұрын
dont be surprised if one day, its written in a language he doesnt know.
@Tanner_o9 ай бұрын
Como ciclista chilango puedo afirmar que no he visto a nadie ni de cerca rodar como Safa. Si logras destreza al ratonear con el tráfico pero lo que él hace está en otro nivel.
@ProfeTa610 ай бұрын
5 years since the time of Hotline - Safa by Terry Barentsen... If you think Safa in this video is wild/crazy then well, you have no idea.
@joeemmerling213910 ай бұрын
I loved and hated every second of this. Pure talent, there’s no luck involved. Well done Safa, this is amazing
@Mr.Falcon5419 ай бұрын
There is lots of luck involded. I mean he is very talented but I would never trust that much on other drivers. It only takes one idiot, drunk driver, mistake etc. and it is game over. And you have to be very lucky not to bump one of those one day.
@EresTontoE9 ай бұрын
Ya bro, riding like a fucking reckless maniac totally involves a lot of talent! One bad swerve from any of those vehicles and he's done, they won't find parts of his body.
@KASSADlN9 ай бұрын
so what would u say about 19:58? U cant control another person, that was the PURE luck
@nancyhoward7819 ай бұрын
That was super dangerous and stupid to take chances with your life like that. Not too mention the guy filming you, he's nuts too. I don't care how good you are, that was beyond crazy and a good way to end up roadkill.
@xaviermoise71876 ай бұрын
"good way to end up roadkill" That's the line of the guy that gets sued handsomely for tapping the bicycle
@randomwildlife2066 ай бұрын
I am blown away. That was one of the best, if not the best cycling videos I have ever watched. The way it was filmed, the numbers running on the left, the commentary and, obviously, the ride itself. It was incredible. Just try and stay safe. That's some speed right there!
@anony-ic3pz10 ай бұрын
Dang...when going between the cars my biggest fear is someone popping a door to chuck some trash or a loogie...stay safe, Brian
@thetechfromheaven10 ай бұрын
I always death grip going thru cars, it's literal playing roulette with doors on a daily basis 💀
@tomsterbg81303 ай бұрын
Knowing people in where i live, i so expected someone to intentionally put an end to the middle-riding by swerving into him.
@kendo424210 ай бұрын
I think it's so cool that you have included mobile auto quarter panel inspection to your business model. Smart!
@JM-sn2xl10 ай бұрын
I'm blessed to be born in the country of México, it has some of the best roads to ride and the cars don't mind most of the time. You can train in the city, not necessarily have to go out to the highway to put on the miles. Also the hills are plenty.
@EDDGC9 ай бұрын
Do you think cars do not mind? We hate irresponsible cyclists.
@hyperviper01269 ай бұрын
@@EDDGC 'we hate cyclist yada yada yada' 'yes, irresponsible drivers are less worse than cyclist because they dont have any signal light' like come fucking on pretty much most of you drivers turn into corners unexpectedly most of the time when I'd already build up my speed.
@hcadena38749 ай бұрын
Are you kidding?? Only on Sundays! ...when the city closes streets for cyclists to ride them. Otherwise, Mx City is one of the most dangerous cities to ride a cycle. Drivers in Cd de Mx are insane, they don't respect other drivers, much less cyclists. This guy is playing with fire and no doubt will discover his reckless riding will have consequences.
@xaviermoise71876 ай бұрын
@@EDDGCCars are irresponsible and apprehensive of cyclists no matter what. That's why this is actually a good way to get 'respect' from other automobiles as a cyclist. Disrespect them and suddenly no one's treating you like a dog scurrying across the road.
@bartmannn67174 ай бұрын
I agree. 10 years riding in Berlin and 12 in Mexico City - Mexican drivers are way more chill than in Berlin. My guess is, apart from not being able to drive fast anyway in a car in that traffic, they are always expecting weird things to happen in the streets. Motorcycles, rolling trashcans (!), dogs etc. They have accepted to share the streets with all kinds of things - they're not as territorial as in Western countries.
@liquidSpin10 ай бұрын
My eyes were GLUED watching this one. INTENSE AF!! GO SAFA!!
@mikenations363610 ай бұрын
One of best yet safa, love it. 19:55 pedestrian guy probably freaked me out the most.
@straubinio_styo77688 ай бұрын
Absolutely nuts
@Jimmyfpv_10 ай бұрын
Not only are your skills next-level sharp, but also your conditioning to be able to maintain that power and doing bursts all over the ride. I have ridden a motorcycle in those streets and I wouldn’t attempt what you did lol
@kynzie1424 күн бұрын
4:55 almost took my breath away
@visceras79799 ай бұрын
It's a cool video, but it is incredibly stupid and reckless at the beginning, and contributes to the negative stigma some drivers have towards cyclists. No one should be doing this. The roads belong to everyone and should be used safely, it should not be used as your racing track. Any slight mistake made by or the drivers, and you could've caused some serious accident here.
@Thirtyeight458 ай бұрын
SAFA "The Dumb" Brian
@HuracanHilarantedelPueblo5 ай бұрын
He manejado en esa carretera y me ha sorprendido lo temerario que es este sujeto
@iceman11254 ай бұрын
this is why cyclists are hated, especially the one riding recklessly like this
@JuanGarcia-yu3hi3 ай бұрын
Why don’t you do that in your country ! I’ve never seen this happening in Canada because If they get cut, they will a good fine for doing that, however they go to Mexico to do whatever they want and not getting any consequences.
@-Eternal-Damnation-Ай бұрын
100% agree. Super dangerous, even with his level of expertise
@illbenooneelse2 ай бұрын
To hell with the haters… absolutely legendary! Safe travels, well-wishes, and hope to see much more for years to come 🔥
@teddyours336510 ай бұрын
Hi Safa, idk if you are reading this but i just wanted you to know that i've come to cycling like 4 years ago and really started watching your videos 2 years ago and they all are awesome and really helped me get more confident through traffic and in descents but this one is by far the most impressive and the footage is awesome, i could nearly feel it... thanks for all the skills your videos taught me anyways §
@sovereigndonation4217Ай бұрын
My heart was on my throat the whole vid, and I'm saying this as someone who commuted from Edomex to CDMX on a motorbike for many years. People call motorcycle riders crazy but nope, Mexico City is a very anti bicycle city that has very crazy cyclists who dare to ride here anyway😂 Stay safe out there 14:18 that overtake though😂
@andymcinroy10 ай бұрын
This was fun to watch while on the turbo. My cadence and heart rate were quickening with the peril. Stay safe.
@mctrials2310 ай бұрын
Yeah, never try and do a Z2 workout while watching SAFA. Far too exciting!
@claudeschweizer393210 ай бұрын
yesss some mexico again, nothing beats this kind of traffic. Stressy, but yet thats what's the most fun to cycle, next to decents :P
@CarsGarage9 ай бұрын
Awesome vid 12:50, 14:17 🤣 , 18:45 never mind🤣
@djinthemixxX9 ай бұрын
I shit my pants at 12:50
@kapilchhabria17278 ай бұрын
12:50 shat my pants, 14:17 laid a brick.
@santiagodsl7 ай бұрын
19:59 the dude walking could have been a problem !
@Forgot1010 ай бұрын
I once did intervals on a road I didn't know. On the last interval I was doing 40+ km/h between two rows of cars standing at a red light. It went well, but I decided that I'm not doing that ever again. Here you just casually cruise between even more lanes of packed traffic at similar and even greater speeds. This is truly terrifying.
@florianvanbondoc35396 ай бұрын
Alot of fearfull people here. I just see alot of experience. This guy has definetly done this for awhile. I like that you are aknowledging fhe risk, and taking calculated risk. Stay safe. Love your vidoes. ❤
@MatveyAndreyev10 ай бұрын
Oh yes, more Safa vs. CDMX hotliney stuff. These are my favorite cycling vids on the internet.
@willpeakes60009 ай бұрын
Bro, you're giving me a heart attack! I see Azeem, below, had the same thought. You've got nerves of steel my friend!
@SendingStache10 ай бұрын
I ride motorcycles and bicycles. I understand everyone who rides both is different, but I personally trust myself and my machine more in the case of motorcycles. I feel more capable on them and that I can get them to respond to my needs better. That being said, I don’t know I’d even ride my motorcycle like this, at these speeds. Incredible bike control. As always, I’m in awe. You’re a master of your craft, as insane as it is!
@CT-zo9pe9 ай бұрын
Note: Professional rider, on an open course. DO NOT TRY THIS AT HOME ✌🏻💀. If anything the safest side to pass (if there is one in this case) in on the curb/right side (unless there are cars turning right, then it’s a quick dive to the left 🤔. Awesome job Safa on making it through and not dying…🤘🏼😎.
@benitojuarez947510 ай бұрын
💫Wow Safa, I really like watching your videos, you are the king of the roads 👍🏻💯
@marielsommer25444 ай бұрын
wow! gran video y edición, muchísimo respeto a esa gran habilidad, aparte me sorprende un chingo que Safa conoce mejor cdmx que miles de personas que nacimos y crecimos ahí. Creo que es parte de la cosecha de ser tan explorador , ratonero y basicamente una leyenda sobre la bici. Gracias por compartir la adrenalina, mis manos no pararon de sudar!!!
@Mathieu_CHRC10 ай бұрын
Gorgeous and frightening at the same time. I like that.
@MGO_THE_CREATOR5 ай бұрын
Que dios te cuide pero que no te guarde. Que chingón verte de nuevo montando nuestra querida ciudad, un abrazo Safa! PD; Aguas! 😂
@gangstreG12310 ай бұрын
When I think of "breakneck speed", I imagine Safa's riding like this.
@rodolfobaliga757710 ай бұрын
Man! im your avid fan coz im a biker too from Philippines, i watched some of your videos really awesome, But this one is really one of the most dangerous video of yours. Im praying for your safety bro.
@nwadillargue10 ай бұрын
Yoo what places you get to?
@rogereheadbyrne479010 ай бұрын
Mexico City is Awesome and this footage is Awesome too! Now i know why i get so pumped watching Brian, its because not only are you the Goat at this stuff i understand why you want to relive your days as a courier! I applaud your Skill!🙏
@7necromancer5 ай бұрын
That was epic, I could feel the adrenaline through the screen
@frazebean511710 ай бұрын
I love your videos Safa but this one is crazy. Too dangerous.
@basselm8043 ай бұрын
This is some legendary shit... not just because of how insanely harrowing it is, but also the way he's just casually narrating it as if over a cup of organic Hibiscus tea
@rafamenjau97399 ай бұрын
i didn´t had to start watching the video before hitting the like button, every Mexico City video is always epic. You really inspire so much people, hope to keep watching amazing videos. Greeting man.
@raabidskate5 ай бұрын
This is insane! Your control and speed are amazing
@hcadena38749 ай бұрын
Such unnecessary, irresponsible, reckless cycling. Putting those poor truck and car drivers at risk of feeling guilty for having splattered your bones and brain all over the pavement, ... just cause you have a death wish??? Really???
@tonydelmuro3939Ай бұрын
You are monster for riding at such speed in a very highly traffic Mexico. Saludos Safa!
@reinholdachleitner206910 ай бұрын
Happy New Year and wishing you all the safety in your new Videos to come.💯👌🏻💪🏻🚴♀️
@DuiMendezVillegas9 ай бұрын
wow!!! eres un absoluto crack SAFA!! realmente un idolo, tu contenido es increible
@thetechfromheaven10 ай бұрын
I work doing app delivery and get this feeling every day slicing through the traffic in the bike doing 40+kmh. You should come to Nogales Sonora Brian we have some amazing tracks and some annoying traffic to slice thru despite being a small town 😂
@Ezekiel_Burton10 ай бұрын
Haha same here in England, weaving thru traffic becomes second nature when you do food delivery. You learn driver habits and get great reaction times 👍👍
@SerjikOk9 ай бұрын
Райдер настоящий сотона. Друг! Ты пощекотал мои нервы. Однозначно лайк
@SonnyDarvishzadeh10 ай бұрын
Him: Balls of Steel 💪 We: 🫣
@AlexEhay10 ай бұрын
@OM-sb2bd9 ай бұрын
The fact that Brian is still here doing this after all these years … is gonzo!!! You either trust your tires or you don’t! 😂🔥🤘🏻⭐️🚴🏻♂️☮️ And how about the motorcycle tracker!! BALLS OF STEAL
@johnobrien68699 ай бұрын
Regardless of our view on this...one thing is undeniable. The level of skill required. The reaction time and anticipation is up there with professional racing car drivers.
@Ndin-ip4su10 ай бұрын
I am a fan of your videos and hope to see you ride for a long time! But what you are doing in this video is simply mad. Please refrain from doing this type of ride and stay safe!
@Saladh_Olivier9 ай бұрын
geez... being at mercy of cars and trucks taking too tight lines is so unnecessarily dangerous. take care, mate ❤
@thomasobermuller884810 ай бұрын
Great talent on the bike, unbelievable! But I think it's better and safer without traffic. Driving so narrowly and quickly between the stationary cars will eventually go wrong! A door opens, a car suddenly changes lanes, a pedestrian walks between the cars, a motorcycle changes lanes. Nobody expects such a fast cyclist! More likely with a meteorite impact ;-) . Drive safe, we want to see your videos in the future! 😀😀👍👍👍
@claudeschweizer393210 ай бұрын
what also should be mentioned: if ure able to ride on a highskill level, speed can be an advantage :) a taxi turning and u just quickly pass it by, so theres no time for it to actually hit you. You just gotta be aware x10 and THINK AHEAD. But that needs skill, training and focus. :) that's why it's so shocking to the outside, and im sure still scary to safa, but it's a comletely different thing than for an average rider. No need to be too scared ^^ But still, always wiishing safa all the best from the bottom of my heart. Yet rather be confident with him, instead of being frightened :)
@fromzerotonothing30110 ай бұрын
you can't win everytime buddy
@MrLoose26Ай бұрын
i'm speechless the speed and skills are just mind blowing, hats off but stay safe
@appetit261910 ай бұрын
Love the commentary. I've always love street riding so being able to get some insights and tips from your riding is so helpful. Sending love from Thailand. 🤟🔥
@zissmoo70309 күн бұрын
wtf!!!! here in méxico???? you got a lot of balls,! man what incredible video, really awesome! stay safe!!
@paulchiu329 ай бұрын
100% extreme concentration from start to finish, 100% understanding of your own physical strength, bike control skills and bike acceleration, deceleration and braking performance, 100% familiarity with road conditions and extremely fast reaction time. Driving through heavy traffic at high speeds is similar to meditating, becoming one with the environment and not thinking about anything.
@Truebluehendo3 ай бұрын
Awesome riding mate!! Pleasure to watch. Thanks
@Rhys3143 ай бұрын
It's not awesome, he poses an accident hazard and breaks other people's car property.
@YeahRightWm310 ай бұрын
4:54...heart was like...dropping out of chest
@MikeS24-v4s10 ай бұрын
WOW DUDE!!! I was cringing on my seat, a lot of those were pretty tight!! You GOOD!!!
@yijuntey10 ай бұрын
Wow this was a crazy one. The two-way traffic, people, and insane speeds. Loved it
@AlejandroGonzalez-lp5iw9 ай бұрын
México gracias por venir y montar esas curvas me sorprende lo liso que está está carretera 🛣️😤😤😤💚💚
@Kirk-015 ай бұрын
Road bikes are 8 times faster than mountain bikes
@XlogicXXАй бұрын
Brah!! I almost died several times (in a movie sense, of course) watching you navigate those tight windows. You were in that large trailer's blind spot for an eternity. He could have swiped left unpredictably and ended you. My goodness, this is dangerous for you and, more importantly, for the other drivers.
@tommykarate622610 ай бұрын
On fire Safa , best I've seen since you did that track bike in Mexico with Terry B , that was intense brother still my fave 🔥🔥👍👍
@nikkofied8 ай бұрын
what a pure skill in that 20 secs since 19:50. Especially to the guy who's crossing the road 19:59 - must be shocked that he almost died
@Sticle9 ай бұрын
Safa, please dont die, i wanna see more videos from you, and you have started taking risks lately. Please, be careful!! :/
@Jin.Sensei9 ай бұрын
18:50 oh man, im laughing like an idiot... I didn't expect that.
@jean-paullanglois54528 ай бұрын
Oui tu rit comme toi-même 😊!!!!
@bobowsinski17049 ай бұрын
Way too lucky. You’re endangering yourself and all others on the road.
@tomsterbg81303 ай бұрын
As far as it's a bike, he's just endangering himself, but please for whatever reason anyone wants to do this, DON'T DO IT!
@Crustenscharbap6 ай бұрын
The funniest thing is the motorcycle wants to film this. This went well for 50 meters. The traffic. Its beautiful!
@acalabash9 ай бұрын
You really should not be doing this. It's not a case of you just risking your own life, you put drivers at risk of making dangerous split second decisions by riding this way. Also, if you get killed in an accident caused by this recklessness, some other person will have to live with having killed someone. This is downright immoral, and strictly speaking probably illegal as well
@DavidMichaelChen10 ай бұрын
Great Scott, speechless. Hope you get 5M views for this! 100% commitment no hesitation. Ride safe.
@jEsperesence10 ай бұрын
I want to ride like Brian! Minus the sketchy-scary riding in the city with high traffic and potholed roads !😅
@thetechfromheaven10 ай бұрын
Pretty much no way to skip the sketchy-scary part. I work doing bike app delivery in México and it's something you have to deal with on a daily basis, Just perks of living in the 3rd World I guess 😂
@Gabriel-vt2jy9 ай бұрын
i feel u haha. Andar en bici en el tercer mundo es duro, sobre todo cuando realmente te queres mover del punto A al B de la manera mas rápida. Saludos desde Nic @@thetechfromheaven
@KeanuSwayze6 ай бұрын
Despite all of the predicted carnage, the only carnage is this comment section. Keep riding the way you love to ride, Brian!
@channelfps10 ай бұрын
Insano, ele é dos meus, a sensação de ultrapassar os carros é maravilhosa
@nikofeuerwehr10 ай бұрын
This video is the most adrenaline I have ever seen on your channel, reminds me of the terry hotline.
@Fadelabdalkhalik10 ай бұрын
Hi Safa ,Thanks for the great videos . is it still summer in Mexico ?
@hellohello-yi8yr4 ай бұрын
The bike control insane
@madyogi616410 ай бұрын
Brian, love your rides. So cool. Yours and your friend's skills are amazing! Stay safe and don't push it there where you don't have to. ;-) Salute!
@tony18270910 ай бұрын
Every Lane is a Bike Lane 😁 This video helped me with constipation.
@williammccormick109210 ай бұрын
18:49 haha, whoops.
@Indefield10 ай бұрын
18:49 LOL
@NateBrema9 ай бұрын
Thanks Safa, I need to wake up and be alert and the coffee I took wasn't working - now I'm fully awake
@Peasant01010 ай бұрын
4:50 hahahahahahaha just overtaking a truck in a corner with 60ish kph.. wtf and 12:49 hahahahahahahahaha
@cmendoza10944 ай бұрын
Being that this was uploaded , the memory card survived 😂
@BartAndrzejewski10 ай бұрын
19:59 was close call AF.
@ernestopreciado489510 ай бұрын
1 or 2 seconds made all the difference 💀
@martinhudobivnik589510 ай бұрын
He sees over cars, POV is lower. Doesn't make it any less sketchy though, that's for sure 😂
@standalouda10 ай бұрын
18:47 🤭🤫😁
@АланАкатекатл2 ай бұрын
Wow amazing, you started your trip in Estado de México and finished in Mexico city incredible, nice trip.
@santiagopfingst66509 ай бұрын
Very dangerous and negligent, if you get into an accident, Who are you going to blame