On: Pacific squid flashes its attack 'headlights'

[adolph]

Last common ancestor was 600m years ago [0], “nearly twice as long as the step … to find the common ancestor of birds and mammals.”

0. https://www.amazon.com/Other-Minds-Octopus-Origins-Conscious...

[esalman → adolph]

At that scale having common ancestors effectively does not matter anymore.

[elevaet → esalman]

It matters! We still have so much in common that's not due to convergent evolution, especially at the cellular level.