The lesson of today's game: with Researcher and Scientist, you'll win quickly or not at all. We got our first cure on my second turn, and quickly managed to organize cures for the other three diseases, so we managed to win before the fourth Epidemic came out. (The Researcher was immensely valuable; of the seventeen cards we used for cures, he contributed eight.)
But things were looking grim: we had six outbreaks, including three outbreaks at once from a nasty triangle chain reaction, and we had lots of three-cube cities on the board. If we'd drawn another epidemic, we would have been in a very rough spot.