Bob Waterston quotes:

When we look at chimpanzees . . . we get this extremely fine-grained view of evolution, and as a result we understand a lot more about the processes that are changing our own genome over time.

We've got the catalog, now we just have to figure it out. It's not going to be one gene. It's going to be an accumulation of changes.

By comparing the human and chimp genomes, we can see the process of evolution clearly in the changes (in DNA) since we diverged from our common ancestor.