Humans have been keeping important secrets from another since we’ve been able to keep secrets. Even well-known people do it! What? You don’t believe me? Well, let me show you a few.
Despite being deemed impossible at the time, Johan created a self-spinning wheel able to lift weights back in 1712. It’s said his wheel spun for 54 days without an energy source. In his paranoia, he destroyed the machine without telling anyone how it was made.
If you know violins, you know Stradivari. His violins were so unique that we still haven’t been able to replicate them – despite our best efforts. He never shared his construction method with anyone, so we still have no clue why his violins simply sound so much better.
Pope John Paul II
Popes have the right to appoint cardinals “in pectore”, which is essentially in secret. While John Paul II appointed four of these during his lifetime, only three were made public. Which means there’s still a cardinal out there who technically isn’t a cardinal anymore because no one knows he’s a cardinal.