I think it is person specific. You will reach a stage where you will realize the basic principle behind most moves.
I spent one year jumping from strategy to strategy. Read almost every single book. Looked at the principle behind many successful trading methods. Looked at methods of people. I spent one month putting it all together in a spreadsheet. I corresponded with lots of successful traders. In the process, I found a trader , who said stop trading for 15 days and everyday go for a long walk and think about your trading. During the break and the walk lot of things started falling in place. I came back after that break with lot of clarity and a plan.
Subsequently I developed a set of trading methods which I have been trading profitably. In my plan I have set aside time for R&D and do look at new trading systems but don't necessarily trade them unless they are superior to my system.