Stanford has a big robotics lab now, and our plan is for a new building that will have a hundred robots walking the corridors, to stimulate the students. It'll be two or three years until we move in to the building. Just seeing robots there, you'll think of neat projects. These projects also suggest a lot of good mathematical and theoretical questions. There's millions and millions of unsolved problems.
Biology is so digital, and incredibly complicated, but incredibly useful.
The trouble with biology is that, if you have to work as a biologist, it's boring. You start over. In computers we can create our own worlds. Biologists deserve a lot of credit for being able to slug it through. It is hard for me to say confidently that, after fifty more years of explosive growth of computer science, there will still be a lot of fascinating unsolved problems at peoples' fingertips, that it won't be pretty much working on refinements of well-explored things.