(1) Computation (key theme from lecture): We are limited in how fast we can perform calculations by the speed of the processors that currently exist, however computer processing power is increasing rapidly. (2) A basic understanding of how even fairly simple biological systems (such as the fly) integrate control logic with their sensing and actuation capabilities. Put more simply, we are still trying to discover how nature accomplishes such things. Prof. Dickinson, who is actively engaged in this area of research, will give one of the (optional) Friday lectures if you're interested further.