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.
“There's the classic charitable contribution, which we receive thousands, and we're extremely grateful and they often come with notes from people, which are very heartwarming, about how much difference our products have made in their life on the Internet.”
“The attractive lady whom I had only recently been introduced to dropped into my lap... I chose not to dump her off.”