On 2021-06-10, Lothar Frings wrote:
Would the evolution of intelligent life
on Earth have been possible without the
moon? I find contradictory statements
on the Internet. Most say that the moon
is needed to stabilize the Earth axis,
one Jason Barnes says that Jupiter alone
could do that.

It's unclear.

Our models aren't accurate enough to know with certainty some effects,
hence the different results between Barnes and Laskar's earlier results
from 1993 on whether the Moon does stabilize Earth's axis or not.

Moreover, we don't actually know the requirements for intelligence or
life in general to arise (beyond, at best, chemistry) so whether things
such as tides or moderate seasonal variations are essential is still a
matter of speculation.