All cephalopods lack myelination in their neural toolkit. What this means is that signal propagation between neurons is between 10-100x slower than, say, a mam

All cephalopods lack myelination in their neural toolkit. What this means is that signal propagation between neurons is between 10-100x slower than, say, a mammal, and it makes signal integration over distance a hard problem. That evolution has found a way to achieve high relative intelligence against such a strong constraint is endlessly fascinating!