Now, I realize it sounds like I just said that a once-in-a-generation event happened twice in short succession, and pandemics are indeed rare, but once all the conditions are in place -- that is a zoonotic virus capable of both human infection and human transmission that is in close proximity to humans -- the barriers to spillover have been lowered such that multiple introductions, we believe, should actually be expected, i was quite convinced of the lab leak Kristian Andersen, until we dove into this very carefully and looked at it much closer.