When you trade when the market is more predictable, chances are your particular trading method will be among the winners and vice versa
When the market is predictable a lot of trading methods will work, when the market is not, only a handful of methods will work.
Always, Think Neutral. When analyzing Market do NOT get manuplated with your floating trades
When I look at technical indicators I see data preprocessing.
When I look at EAs I see optimization problems.