What Is Blood Sugar And Why Is It...
How it Works8 mins ago
No best answer has yet been selected by Hgrove. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.It refers to the Hitchhiker's Guide to the Galaxy where a race of hyper-intelligent pan-dimensional beings wanted to know the answer to the Ultimate Question of Life, the Universe and Everything. The answer was calculated to be "42". The problem was that no-one knew what the question was (which is why the Earth was created...).
There's stacks of H2G2 stuff on the net if you're interested but here's a good place to start
http://en.wikipedia.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy