Your questions around why we need sleep make me wonder if we could develop a drug cocktail to do that work for us while we're awake. Similar to Iain M. Banks' "

Your questions around why we need sleep make me wonder if we could develop a drug cocktail to do that work for us while we're awake. Similar to Iain M. Banks' "Culture" book series where humans can inject themselves with their "drug glands" to improve their capabilities.