[DiogenesKynikos]

> The best theory I've come across is that patient zero was a person collecting bats in caves for the lab in Wuhan.

There are literally millions of people in China who live in close proximity to bats. You don't have to invoke the 1-in-a-million lab worker here (who will be much more careful than the other 999,999 people, anyways). There are literally people who go shovel bat poop out of caves for a living. Then there are all the millions of farmed animals that have contact with bats - this is how the original SARS got into people.

A lab worker getting infected in a cave and then going back to Wuhan is not the best theory. It's an extremely improbable explanation for the pandemic, when you realize just how much contact people and farmed animals have with bats.