On: Every neuron potentially has a different genome than those it's connected to

[pishpash]

Not sure why this _should_ be surprising, seeing as how multicellular organisms began as cooperative colonies of individuals.

[jboggan → pishpash]

Maybe? It's certainly the dominant theory but I wouldn't ascribe real truth to it. There are certainly species today that operate this way but there's no way to prove they represent the origin of multicellularity. There's no reason to even believe it happened only once.