Some people argued about whether wearing a mask is actually helpful for stopping the spread of COVID since there aren’t enough clinical experiment and no strong evidence to fully support that. And some people even argue that wearing a mask may lead to bad results since it may increase the chance of touching one's nose.
On this, Taleb said that "There are no clinical data on whether it’s unsafe to jump from an airplane without a parachute at 35,000 feet, but since we understand gravity, we don’t need a clinical study."
Science is not about evidence. Science is about properties.