[anyfoo]

I'm an extrovert, and I am also interested in "science" and "technology" (but not startups). One of my primary hobbies is very math-heavy, and involves hours and sometimes days of intense focus. I also gave talks in the past, e.g. on functional programming.

The point is, I have no idea how any of this is related to being introvert or extrovert (and was wondering the same in the post you replied to).

People can shut themselves into their room with only oscilloscopes and MATLAB as company on one weekend, and meet up with friends on the next one.