Pick a random wikipedia article. Find the minimum number of intra-wikipedia links you must follow to reach a crackpot. (Only the last hop may leave the main article namespace. Redirects do not count as hops.)
Example: Euler angles → Quaternions → Tom Bearden, a crackpot; 2 hops.
Example: Euler angles → Quaternions → Tom Bearden, a crackpot; 2 hops.