 The first statement simply specifies a name for a number. The second statement gives a partial description that is constructive, information compressing and unique. The 1000th Fibonacci number has 209 digits, so the description “the 1000th Fibonacci number” is much more efficient than the actual name of the number. Moreover, we have an algorithm to construct the number. This might not be that case for the description in the third statement. We do not know whether the first number that violates the Goldbach conjecture exists, but if it does, the description might well be ad hoc and thus gives us no clue to construct the number. This rise to the conjecture that there are data compressing effective ad hoc descriptions: