Demonstration 1 looks like the one I do to explain to people how I see in general. I have Amblyopia and thus, I cannot properly estimate depth in my environment (this is why I often fail to catch an object thrown at me). However, my demonstration is sensible different as I don't want others the sense the depth of their environment with another sense, but I want them to rely exclusively on their eyes. So, I hold a pencil in a vertical position in the frontal environment of someone. Then, I ask them to try to reach with the top of their finger 👇🏻(hand should be as the emoji; vertical with the finger pointing down) the top of the pencil in an assertive (non-hesitant) fashion. Usually, with the two eyes open, this task is easy. Then, I ask them to put one hand on one eye and we redo the demonstration. As a result: (a) they are more hesitant in their gesture while they try to put the top of their finger on the top of the pencil, (b) they miss them at least once the target and reattempt right away, and (c) they tend to incline their finger to have more surface available of their finger to touch the pencil (like a mix of these two emojis👉🏻🫳).