I was thinking about this the other day. Like how all of these different types of things splintered off and evolved in different ways. Trees are these creatures that grow their limbs into the earth and the sky rendering them immobile but they have the same ancestor as us.
There is some speculation that the last common ancestor between us and fruit flies preceded the evolution of brains. If correct this means brains have evolved independently at least twice.
So many assumptions are necessary for this type of research, particularly for the timing. Inferring such an early age depends on a "clock" that varies based on the stringency of purifying selection. I.e., it is only clock-like to the degree that competition and the level of biological systems integration were essentially static through time.
“It’s not the first cell, it’s not the first microbe, it’s not the first anything, really,” said Greg Fournier, an evolutionary biologist at the Massachusetts Institute of Technology.
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[ 0.17 ms ] story [ 55.8 ms ] threadI thought it was Adam. /d
“It’s not the first cell, it’s not the first microbe, it’s not the first anything, really,” said Greg Fournier, an evolutionary biologist at the Massachusetts Institute of Technology.
"LUCA is the furthest point in evolutionary history that we can glimpse by working backward from what’s alive today."
Which translates to: first in time, IMO
But my point was: LUCA described here is realy complicated so why it makes some new quality ? Maybe some milestone, yes.