The Market is always wrong means that @ every given time, in any given part of the market there is miss pricing.
Not that everywhere all the time the market is wrong. The market is efficient to the degree that human groups are efficient. The machines are a story I can't speak on since I'm not a quant, but judging from their performance in this last crisis it seems they can be as wrong as the rest of us.
Our job as traders is to find these miss priced assets and buy them at the right time. This is not easy, if it were, everyone would be doing it. Once we find these assets we need the wherewithal to execute a buy program. They're usually volatile as hell for any number of reasons so ppl buy them at the wrong time and sell them at the wrong time. I try to buy when they sell and sell when they buy.
So, the same way Cramer says "there's always a bull market out there somewhere, my job is to find it" I say "there's always a miss pricing out there that will lead to bull market somewhere out there, my job is to find it.