yes. very nice.
darwin called this contingency, i believe. or am i getting confused that he called it chance and other folks call it contingency.
anyway, the adaptations that thrive often move a species into a richer environment. or provide advantages in a competitive one.
so evolution isn't advancement. it's adaptation to a serviceable niche.
even so, the adaptation of species starts with a and moves to b.
spontaneous generation, like a medieval maggot, or pallas athene from the head of zeus, is an uncommon phenomenon!!