Pandemics Don't Have Borders

I said at that time, germs don't have borders, which we certainly learned in the last couple of months. So we can experience when something like the current pandemic happens, it's hard to factor that in. That's why you never want to use borrowed money, and at least in my view, margin to buy into investments. And we run Berkshire that way. We literally try to think of the worst case of not only just one thing going wrong, but other things going wrong at the same time.