You didn’t need this study to realize that this was wrong: jellyfish and hydras also sleep despite not having a central nervous system. There are indications th

You didn’t need this study to realize that this was wrong: jellyfish and hydras also sleep despite not having a central nervous system. There are indications that sponges sleep too, despite not having any neurons (though obviously it’s somewhat ambiguous): https://www.science.org/content/article/if-alive-sleeps-brainless-creatures-shed-light-why-we-slumber https://www.science.org/content/article/if-alive-sleeps-brai...