Subtlety (n.) : A mathematical concept that is almost, but not quite, as profound as it claims to be.
Example: "I've been working on this paradox for years, and it's almost as if the answer is staring me right in the face, but I just can't seem to grasp it."
We're currently working on a solution, but it keeps slipping through our fingers like sand in an hourglass. Learn more about our implementation efforts.