[jlogajan]

Hard for an original organism to get along without those systems long enough to evolve them.

There are lots of "organisms" without the particular systems of another organism, and they seem to get along just fine without them.

[William Terrell]

There are lots of "organisms" without the particular systems of another organism, and they seem to get along just fine without them.

But they have their own equivalents. It's that soupy interim between one vital system setup, especially those involving reproduction, and another that bothers me. Too may of these systems are irreducibly complex.