Because all of biology is connected, one can often make a breakthrough with an organism that exaggerates a particular phenomenon, and later explore the generality.
“A movie camera is like having someone you have a crush on watching you from afar - you pretend it's not there.”
“I don't think you should be allowed to eat in a restaurant if you haven't waited tables at least once. It's so irritating when I see people being rude to waiters, like, it makes me want to slit their throats! Like, really? You're really this inconsiderate?”