[KineticLensman]

> octopuses are aliens on earth with very different evolutionary track having developed ‘brains’ before our ancestors did independently

IIRC octopuses appeared in the Jurassic era by which time 'brains' were well established amongst our ancestors, notably the earliest proto-mammals.

I agree that they are an interesting form of alternative intelligence and parallel evolution, but biochemically they have numerous things in common with us, including many gene systems that are highly conserved across a variety of different clades, including our own.