Quote: Originally Posted by A Guy
They say humans only use a small percentage of their brains.
And they always forget to say "at any given time".
To elaborate: the brain is an exceptionally complex analog computer. Each portion of the brain has a very specific function and cannot be drastically re-purposed so easily if at all.
For example, the motor cortex is divided in areas that control a very specific muscle of your body. Some damage can be compensated to a certain extent if enough of the area of a specific muscle is damaged, but if the specific area is fully gone, you lose control of that muscle. Period.
And the sensory cortex is divided in areas that receive the input from a very specific sensory cell or group of sensory cells.
Bulk of the brain's surface is used by memory areas, again linked to specific functions, so motor memory, visual memory, sound memory, and so on.
There is also the part for instincts and emotions (the cingulate cortex) and the part for superior brain functions, that is taking rational decisions (prefrontal lobes, lobotomy damages connection to this part and depending on the extent of damage you can end up with total annihilation of the individual).
So using 100% of the brain would be just sensing all sensations at the same time (hot-cold-pressure-pain), contracting all muscles at the same time, recalling all memories at the same time, sensing all emotions at the same time, while also screwing up the rest of the body by releasing a ton of wildly different hormones not meant to work together.
Just correcting a very annoying piece of misinformation, not a critique to you in particular.
I'm somewhat afraid of a "two tiered" future, dumb masses and a better fed better educated "elite" who actually run things.
I'm pretty sure that it has been like this from day 0.
And seriously, evolution is a bi.tch. The only thing that matters for it is if the individual makes more offspring than an individual with a different set of traits.
So that the traits of the most successful individual are passed on to the offspring as the traits of the less successful individual decrease in % in the population until they disappear or keep a token presence.
Now, while this is fine for animals that aren't horribly smart on average, for humans it breaks down a little.
I mean, look at how the natality drops as the average income of the nation rises. Here in EU it's not negative just because there are a ton of migrants still making tons of children.
What can evolve can devolve too.
This is happening at an alarming rate for allergies and other relatively minor stuff. Since we all benefit from decent healthcare technology, people that in the past would have been too weak (against invisible threats) to live are allowed to live by using medicines, therefore allowing their traits to spread, weakening the population (and making it very dependent from medicines and medical tech to survive and thrive).
I'm not saying it's an evil thing as I'm not a Nazi, but human beings in the wealthier nations are weakening against antigens and non-phyisical threats every new generation just because of evolution.