"While we cannot rule out the possibility that these trading rules compliment other market timing techniques or that trading rules we do not test are profitable, we do show that over 5,000 trading rules do not add value beyond what may be expected by chance when used in isolation during the time period we consider."
They tested 5000 trading rules! And that is TA? Stuff like MA cross overs and percentage moves from highs and lows. So they learned TA from what - extracting 5000 rules out of 7000 rules and running a back test on each and that is real TA?
So to learn this version of TA, take an idiot who can code signals like a MA crossover, give him the rule book and a week later call him a technical analyst? So it doesn't work? What a shocking surprise. So that free software I downloaded won't make me a millionaire after all?
Oh my goodness - all the tax dollars wasted in education. It shows you how some bright people can be educated out of their intelligence with a computer and a big rule book. That is so pompous.
So if I did 5000 tests on how metal can be bent, hinged, welded, cut and shaped and I didn't end up with a car a week later then car designers are wasting their time?
This is so stupid it needs to be in the ET Idiots Hall of Fame.