"Best" evidence for evolution.

Wouldn't the foundational evidence for evolution simply be the observation that some animals appear to share similar features? This simple observation leads to a series of questions, conjectures and inquiry that lead to the current modern synthesis.People look more like monkeys than they look like squirrels, they look more like squirrels than they look like fish and they look more like fish than they look like spiders. It's all downhill from there.