Warren Buffett's Moats Are Breached

I start almost every column I have ever written about Berkshire Hathaway (BRK.A)/ (BRK.B) with the sincere message that, similar to many investors, I worship at the investment altar of Warren Buffett and Charlie Munger. But that adulation doesn't preclude me, as an investor, from questioning their and the company's direction/strategy nor does it inhibit me from being short Berkshire's stock (which I have been over the last nine months).