We do keep on formulating on what are the ways we could be able to take advantage. Does it work all the time? No its not.This is why we do keep on formulating strategies
basing up on the market condition that we are really that facing on. Make use of indicators which do works for you and dont depend on other peoples
analysis.
I agree with your point, Many rules of the past come in handy for a while, which we often forget that all our past and present rules work together. But I can say that a lot of previous thinking helps to generate new ideas that lead to all kinds of new thinking and problem solving. As every trader goes through a learning curve, it can be said that the past and present combine to produce a result. Finally, we can say that we will use all the technical things of the past that will be useful to us, and on the contrary, it is better to keep away those that will not be useful to us.
the old or the new trading strategy actually won't be much different. whatever we used in the past will give us experience that we can use for our current trades. using a new trading strategy that may be the development of an old strategy.
those who are more active in trading know how they will use the right trading strategy and they use it the most. each trader has their own way.