[@Buddha]
You don't actually have to be a genius to play a genius lol. Unless you were only referring to the intellectual aspect of the word or only having in mind scientists and such, a good hand to hand combat fighter could be called a genius based on his extraordinary  skills on the field. Now you don't have to know shit on hand to hand combat in order to RP as a genius on the field. That extends to magick-using characters that are called geniuses of that particular field of magick.

To bypass this barrier, let's see an example.
[b]You are a hunter. You are tracking some bandits that ran away through the forest.[/b]
Instead of researching for tracking methods online, you could just say :"My character uses his tracking skills to scan the area for any clues"
You don't have to be highly intellectual in order to play a genius.