It's a weird moment for the markets. The big stock indices are near all time highs. And yet there have been some high profile meltdowns and blowups. There was the collapse of the vendor financing firm Greensill. And there was the wipeout of the Bill Hwang fortune. Meanwhile, numerous SPACs and other speculative stocks have been getting clobbered. So we talked to short seller John Hempton, the CIO and co-founder of Bronte Capital, for an explanation of what's really going on.