Scientifically speaking, the Miller experiment was a non-starter. Then when the atmosphere they used was called into question, the icon was doubly dead.
Not much is known about the anatomy, biology, and ecology of the enigmatic trilobozoans.
One scenario involves a first human pair created from scratch — Adam and Eve, as many traditional religious believers would have it.
“Nothing in biology makes sense except…” Go ahead; complete that sentence yourself, with a yawn.
In 1991, Richard Dawkins gave a lecture arguing that natural selection can produce complex and seemingly improbable features by an accumulation of small, incremental steps.