If I won the lottery, I would go back to school and study biomedical devices probably. Back to physics, electronics, medicine, signal processing, and real-time low-level firmware.

I studied engineering and I want to be an engineer again. I loved doing research and with lottery winnings, I wouldn't have to worry as much about the academic rat race.

The software world is taking over domains that used to be electronics. Web is replacing low-level systems. "Agile" is replacing "engineering".