Are you an optimist or a pessimist?
Somebody once said that optimists invented the airplane (Orville and Wilbur Wright) but a pessimist invented the parachute (Louis-Sebastien Lenormand).
Of course, rarely are things so simple and so straightforward, especially when you discover the parachute was actually conceived long before the introduction of the airplane! The “modern” parachute was created to escape from ill-fated hot air balloons. Two people might look at the very same thing but wind up coming to very different conclusions.