I did philosophy as an undergraduate and I spent a lot time thinking about the problem of free will. While philosophers as early as Hume had a pretty rich definition of freedom, our modern foray into understanding the brain will no doubt help us refine the notion of freedom. I Also spent a fair bit of time thinking about language understanding and decided that perceptual grounding was a key missing piece for semantics. Fortunately, neural network models are already beginning to provide that grounding.
For fun I like to have dance parties with my housemate’s dogs.