I took a maths degree in the university. It was in my last year that I decided to purse a PhD, so I was about 23. At that point I knew very roughly want I wanted to do, but eventually it crystallised into working with robots 🙂
Since I did computer science, I had different options. When I was doing my master’s my supervisor called me for a meeting. The robot was in his office, and my supervisor asked me if I want to do a PhD in robotics. I already knew that I want to do PhD, and being able to see the robot in person made me want to do robotics.