The proof for both is from this millenium (from Galileo and Cassini probes). To me it's still fairly recent. While I find the principle of induction does trivia

The proof for both is from this millenium (from Galileo and Cassini probes). To me it's still fairly recent. While I find the principle of induction does trivialize lot of mathematical calculations I cannot apply the same principle of non-wonderment to discoveries made in the material world.