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.
“You know, without China there is no Wal-Mart and without Wal-Mart there is no middle class and lower class prosperity in the United States.”
“There is a major turning point in life when you have to decide: shall I grow old gracefully or shall I try everything to stem the tide? For me, that point came in 2001, when I stopped dyeing my hair.”