Brain vs. Computer

all right you guys it's time to pick

some teams it's a good match between

your computer and the you know off

camera that technically we're not

supposed to compare human brains and

computers like it's not something that

you can technically do which is a little

disappointing considering how much time

we spent on that intro okay so we can we

can kind of compare the outputs of

brains and computers so let's at least

do that the world's largest

supercomputer is called Kay and it lives

in Japan and I mean if it was an America

we'd call it something much more epic

than that but they were like let's pick

a letter and that'll be it it computes

about four times faster than your brain

and has about ten times the storage

capacity the human brain can process the

equivalent of about 2.2 mega flops I

love that word mega flop it sounds like

what my cat does when she wants me to

rub her belly a mega flop is a million

operations per second so our brains are

processing about 2.2 quadrillion

operations per second which I mean when

you see the stupidity of some people

it's just shocking

by contrast the case of your computer

does about 8.2 billion mega flops which

is a lot more on the other hand the case

supercomputer takes about 10,000 watts

to run by contrast our brain takes about

20 watts to run and the KSR

supercomputer cost tens of millions of

dollars to create whereas the human

brain costs literally nothing to create

the annual operating cost the case

supercomputer is ten million dollars the

annual operating cost of your brain is

hot pockets and Quiznos and then you

look at it pound for pound ER cubic inch

for cubic inch and your brain is like

the size of Bossier

fists cell together and the K

supercomputer uses 864 cabinets that are

stretched out in a room the size of a

large airplane hangar but it's still

really difficult to compare brains and

computers because they work in

completely different ways a computer has

a program or a set of instructions that

tells it what to do in addition to a

memory that contains all the data and a

processor that goes and gets the

instruction and applies them to the data

one at a time in a sequence it's all

very orderly on the other hand a brain

doesn't have separate processes and

memory program each neuron in the brain

can take in thousands upon thousands of

inputs at a time and simultaneously

independently process them and spit out

the answers plus it modifies its own

functioning on the fly all this is

happening and it's hundred billion or so

neurons the K supercomputer doesn't get

anywhere close to being that cool so a

supercomputer may be more powerful than

a human brain but the human brain is

still totally free twins thank you for

watching this episode of scishow if you

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