My actual trading is based on what I call Real Time Analysis. My approach is discretionary. I do not subscribe to the myth of non-discretionary trading. I do not believe that mechanical trading can deliver extraordinary results. Discretion comes in many forms. You use your discretion in selecting a learning source, in subscribing to this technical analysis indicator rather than that one, or in deciding on the value of simplistic indicators versus complex indicators. If you are an expert you can do all of these with much greater certainty that your choice is likely to be a good one. If you're a beginner you may very well set off on the wrong path.