Would you agree? All the math in the world that indi's are based on is just that, math. Doesn't do ANY good if it is plotting something that has already taken place in the past. NO? You be the judge.

PowerBroker 

Would you agree? All the math in the world that indi's are based on is just that, math. Doesn't do ANY good if it is plotting something that has already taken place in the past. NO? You be the judge.

I guess it all depends. imho there's useful information from the past. to find support / resistance you might need that kind of information.

the most important information I get from an indicator, is from the current bar (not that much in the past).

let's say you have an indicator that will give you a signal. now the indicator is one thing, but the even more interesting thing is what calculations (math, algos or whatever you want to call it) are used to trigger that signal.

so for me, math is not just math.

Quoting 

but the even more interesting thing is what calculations (math, algos or whatever you want to call it) are used to trigger that signal.

if the calculations used to produce the trigger of the signal are based on math. Does that make the candle you are in or entered on invalid or valid?

PowerBroker 

if the calculations used to produce the trigger of the signal are based on math. Does that make the candle you are in or entered on invalid or valid?

I would hope valid.

but again, it all depends. in order to have a valid setup, you might need more than just one single signal.