I've been reading some Sherlock Holmes lately, and thus somehow wandered onto some websites with different Riddles on them. One that came up a lot was something called "Einstein's Riddle." According to most sources, Albert Einstein wrote it near the beginning of the 1900's and claimed that only 2% of the population could solve it. However we now know that isn't true because I just solved it on my first attempt. Seriously. I will scan the sheet of paper I solved it on if anyone wants proof.