Sleep

!!--- title: Problematics of sleep categories: [ Science ] !!---

1. Computational or processing systems need stabilization mechanisms.

1.1. I take this as obvious at least in biological processing systems. Artificial processing systems (e.g. a digital computer) may not need such stabilization mechanisms.

1.2. Because of 1 it is probable that sleep-like states evolve independently in different organisms and different periods in time.

1.2.1. The evolution and phylogenesis of sleep is hard to study. It is unclear how much sleep-like states in, for example, C. elegans, may contribute to the understanding of sleep in mammals. Perhaps not much?

1.2.2 All mammals sleep, but the question "what is the simplest mammal that sleeps?" is not stimulating. Sleep seems to be very-well preserved. One might just stick with rats if curious about this.