To see a World in a Grain of Sand - A traditional sand timer has a simple function - it is used to measure a specific period of time. However in Tim's amazing toy collection, sand timers appear in a number of guises.
85650789657397829 + 1402 more digits is an illegal number. To understand why this is, we need to learn a little bit of cryptology, a little bit of math, and a little bit of programming.
