Ride a city bus to the end of the line once, just to see. What you notice along the way says a lot about what you look for.

When there is nowhere you need to be, your attention stops being assigned and starts wandering on its own defaults. One person watches buildings, another watches faces, another is working out how the system runs. Nobody told you where to look, so what you looked at is an honest readout of what interests you.

Take a long ride to the end of a line some afternoon. Afterwards, write down three things you remember, with no effort to make them meaningful. The pattern across them is a better clue about what you should study than any aptitude quiz.