Any piece of data can be represented as a single number. In the limit your entire computer is a single number (all those 0s and 1s can either be interpreted as

Any piece of data can be represented as a single number. In the limit your entire computer is a single number (all those 0s and 1s can either be interpreted as separate numbers or as one gigantic number). If any data is ever illegal then by association certain numbers are also illegal. EDIT: The Wikipedia article points this out.