of this Vauce lean back you can click this annotation

or the link at the top of the description to start it and then you can just lean back

and the autoplay playlist bring the knowledge right to your brain

as you already know it doesn't really work on mobile phones yet so we can tell

you in a better position to lead back

in the meantime let's get Saccadic

no not psychotic, saccadic

referring to what is known as a saccad the quick movements that are eyeballs make me move from one object to the other

As you may remember from a previous lean back some animals like most birds

cannot move their eyeballs into the look from one thing to another they have to head really really fast

and keep the world from being blurry when their bodies new they have to keep

their heads completely stationary

but here's the lead things about saccad when our eyes move

there's a quick blur between one destination and the other

and that blur is completely incomprehensible to our brain

so what are visual system does is erase it from our memory

and instead replace that little fraction of a second that the eye moved

during with the very next thing we see. This leads to a really amazing allusion

called the stopped clock allusion you may have noticed this before

if you've ever been in a room with the clock with the second game like in a classroom

starting your eyes back and forth waiting for class

to be out now here is what happens right when you don't your eyes to the clock

that very first second that very first movement of the second hand

that happens when your eyes reach it seems longer

in every other second afterwards look away from the clock

and then look and that first second was seen to link

as if time itself is stop the reason for that

is that you're brain replaces the time it took for your eyes the goal from here

to the clock with the image of the first thing you saw which with second-hand

and so that little fraction of a second of time is added

to link the time it takes second-hand to move what's really mind-blowing about this entire

fact as it happens all the time all day

as you look around the world from one point to another that little fraction of a second

that your eyeball was moving is lost and your brain just replace it with a very next thing

you see it might just be a tiny tiny mini time

but over the course of an entire day those little fraction in a second

add up to almost 40 minutes

40 minutes of everyday that you're awake are lost

because of eyeballs move

and that's always thanks for watching

so what are you waiting for

picture to start the leaf back or click the link at the top of this video