========================= What I Did On My Holidays ========================= - William Uther I spent my summer working at Sony's Computer Science Laboratories in Tokyo. This is going to be a very informal talk about my stay. Most of the results from my research there are negative so I'll talk about what we were trying to do, and where the difficult bits are. I'll also talk about some of the other research I saw there and finally a little on the organisation and philosophy of Sony CSL.