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| I disagree with the above poster (and agree with the explanation) on the basis of the boldface text... "And nobody knows why". Every human sleeps, so if humans were really curious, someone should have figured out why by now.[[User:Nsimonetti|NikoNarf]] ([[User talk:Nsimonetti|talk]]) 14:23, 21 March 2014 (UTC) | | I disagree with the above poster (and agree with the explanation) on the basis of the boldface text... "And nobody knows why". Every human sleeps, so if humans were really curious, someone should have figured out why by now.[[User:Nsimonetti|NikoNarf]] ([[User talk:Nsimonetti|talk]]) 14:23, 21 March 2014 (UTC) |
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− | While we do not know why we sleep we do know what happens during sleep. All the studies and hypotheses cited here do show information about the states of our brain during sleep. We are well aware of most of the biological processes that happen in the brain during sleep. Its not that sleep is some utterly mysterious thing our bodies do. Sleep research has not been as rigorously studied as other subjects in science and due to the very nature of science and scientific study to consolidate all this data, test hypotheses and develop theories takes a lot of time, findings must be checked, rechecked, and verified, and then there's the time it takes to use the facts gathered to actually come up with a working theory which, if refuted by testing, the whole process has to be done over again. The point is science takes a lot of time, money and manpower. We already know we need to sleep, we know how not sleeping affects us, there are other important questions in science which we are more driven to find answers to. So, our curiosity is considerable and day by day we continue to discover new things, but not many scientists are interested in a field of study which will get you way less money and recognition than breakthroughs in genetic engineering. [[User:Lackadaisical|Lackadaisical]] ([[User talk:Lackadaisical|talk]]) 15:57, 28 March 2014 (UTC)
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| I agree with the original poster. It is interesting how people spend their entire careers studying a life event that they may never experience (consider a man studying the act of giving birth), yet most of us simply take sleep for granted. Now if we could only make sleep more efficient! I think we could spare a couple months worth of study to this. http://www.explainxkcd.com/wiki/index.php/1205 [[User:Puck0687|Puck0687]] ([[User talk:Puck0687|talk]]) 14:53, 21 March 2014 (UTC) | | I agree with the original poster. It is interesting how people spend their entire careers studying a life event that they may never experience (consider a man studying the act of giving birth), yet most of us simply take sleep for granted. Now if we could only make sleep more efficient! I think we could spare a couple months worth of study to this. http://www.explainxkcd.com/wiki/index.php/1205 [[User:Puck0687|Puck0687]] ([[User talk:Puck0687|talk]]) 14:53, 21 March 2014 (UTC) |
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| just becuase we are hungry does not mean we are fed. [[Special:Contributions/108.162.249.231|108.162.249.231]] 07:52, 22 March 2014 (UTC) | | just becuase we are hungry does not mean we are fed. [[Special:Contributions/108.162.249.231|108.162.249.231]] 07:52, 22 March 2014 (UTC) |
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− | I guess we can know what sleep is for by looking at what happens if we, or other animals, are prevented from sleeping. "Sleepiness" isn't just an urge, but an imperative which is torture if not obeyed. Hallucinations, irritability, and eventually death due to immune system degradation occurs, (at least in rats, dunno about humans) and this happens more quickly than starvation. Seems to me that what we don't know is not the "why" of sleep, but the exact pathways by which these malfunctions are caused, {{unsigned ip|108.162.245.117}}
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− | :The referenced national geographic article has an interesting section on "fatal familial insomnia" in humans. [[User:Nealmcb|Nealmcb]] ([[User talk:Nealmcb|talk]]) 14:33, 24 March 2014 (UTC)
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− | It's long been a fundamental technique of artificial neural network learning, to alternate between "learning" and "sleep" modes. I've heard (but cannot find the citation, sigh) that when running neural networks, it turns out that they lose the ability to learn after running a long time. But you can avoid this effect if you periodically bathe the neural network with completely random input. [[User:Jorgbrown|Jorgbrown]] ([[User talk:Jorgbrown|talk]]) 07:35, 23 January 2015 (UTC)
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− | :Makes sense, and reminds me of some optimization algorithms. Interesting! [[Special:Contributions/108.162.219.125|108.162.219.125]] 03:01, 4 March 2015 (UTC)
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− | It seems to me, (in a completely speculative way) that sleep is evolutionary debt from older species. In other species sleep is used to conserve energy at times when is is not necessary, or not possible to do anything beneficial for the individual. It is a trait that evolved very early, and due to it's timing, many other physical and mental processes are tied to it so they can happen while the body is not exerting itself. This ties together a huge number of unrelated things into the process of sleep, which is inherently an energy saving mode, and makes it necessary to trigger all the other critical processes. In modern day first world countries, energy savings is not as nescessary, and artificial lighting, intelligence, and social structures give us useful stuff we could be doing instead, and if the extra processes were dissociated from sleep, it seems that we would be able to function as a 24 hour being (and not just like dolphins or whales where half their brain sleeps at a time, but true 24 hour consciousness), but separating all the myriad of functions tied to the circadian rhythm and the process of sleep is likely to prove difficult or impossible. --[[Special:Contributions/188.114.106.41|188.114.106.41]] 17:35, 11 May 2015 (UTC)
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