If you are asked about pokemon, AI design, 13th century chinese history, martian geology, german literature, Yankees batting averages, lyrics to popular songs from the 1820s, etc. you would be forced to get maximal mileage out of whatever knowledge you can bring to bear on each question, which would in most cases be slim to none.

If the questions are chosen randomly and eclectically enough, there should be no way to game the system, and scores should average out for people knowledgeable in different areas.

If you dependably know more than I do across a broad spectrum of subject areas, then I would assume that you have learned more than I have during your life so far, which seems to me to be symptomatic of good rationality.