It's a matter of differentiating between a) what we recognize as the real earnings potential (which some see as fairly limited), and b) what John Q. Sharebuyer

It's a matter of differentiating between a) what we recognize as the real earnings potential (which some see as fairly limited), and b) what John Q. Sharebuyer and Joe C. Fundmanager will probably do (buy buy buy, it's the interwebs!). The reality of 'b' means that shorting is not wise.