Does a species have eyes developed so that they can see/navigate very well in the dark and light? Giving humans the ability to not need sleep doesn't provide much utility by itself, what can they do with it?

You are thinking of it too much as a game to be won, and using forward thinking (which is what people generally have some skill in).

If I happen to move toward light and you don't, I will happen to have a greater chance at survival under certain conditions and less under other conditions.

No plan. No strategy. Just happenstance.

For argument's sake, I will accept your claim of 4 hours (although I'd put it at more like 20 minutes for complicated tasks or learning new things).

But why would one want to increase focus beyond that? You don't enjoy your mind flitting about?

See I think you are suggesting this lady slept sometimes, but I don't think she did.

Leonardi Da Vinci will break down that suggestion.

One could try to learn to focus infinite, so to never again not.

I like both, I started coaching a kid at soccer for free, he is improving very fast so far but he is already 12, also I want to learn faster at work and I am starting this week to play poker again; plus helping my brother with college if he listen.

Judging from Ericsson work you only would improve while keeping out the autonomous phase, so I would like to be able to do it for longer.

I just had an idea while typing, will try to put flow conditions at the training. Hurray!

One could, but one probably would fail.

And even assuming one did, one probably shouldn't. There are much more interesting/fun things to do instead.

http://memorymentor.com/blog/mental-...enius-routine/

Einstein used to sleep a lot !



Edit quote this ---> AIs wouldn't exist without a body (Hardware). Now the question is, can the hardware to be turned on forever without resting ? The answer can be yes if enough energy is given. Could then be possible the only purpose for sleep is to consume less energy (resources) ? That would be wise.

If it was possible to evolve to the point where humans did not sleep, there would also need to be good reason for such evolution.

Let's say that many humans were being killed in their sleep by those who were awake. Or, that those that slept less used the extra time that they weren't sleeping to successfully mate more often.

The gene pool would increasingly become dominated by those who slept the least. In time, only those who had evolved to the state of never needing sleep would survive.

It's perhaps surprising, in many ways, that this hasn't been how things have turned out, but it logically leads to the conclusion that if your sleep patterns stray to far from the median, you probably aren't functioning effectively, as a human being.

^^^This assumes there's no cost to not sleeping. If there IS a cost to not sleeping (or sleeping so little that it's effectively not sleeping), it would not become a fixed trait.

Being awake to forage 24h would be a huge advantage. Warm-blooded animals tend to outcompete cold-blooded counterparts because they can spend more time gathering resources (don't need to spend time on regulating temperature by sunning, etc).

While this is true, we obviously developed sleep way before we developed into humans. All vertebrates sleep.

Wouldn't it be better to go into a period of lethargy that would have the same advantages of slowing metabolism and keeping us from wandering into trouble that didn't involve becoming unaware of your surroundings?

there is a high correlation/causality between sleep and "system" repair in human body

I would assume that operational repair of damage tissue is somehow inefficient if you are awake