DislikedMegadave 5000.... You are right in part of your argument. Evidently you are
not a Point and Line Trader...better known as a P&L'er.Ignored
DislikedWhat do you think that number on the chart is...if it's not the price? And what is it
down on the bottom of the chart. It's "time"....Price equals the function of
time. You said it....the run and rise.Ignored
Take a simple f(x) relationship. Say f(x) = 3x (or y=3x). You know every (y,x) pair on the line no matter what. In this case, y is a function of x (and only x). In this example, y is not dependent on z, or q, or the position of the moon, since they are defined in our function.
If x is 3, y must be 9. It MUST be 9. But this function isn't a time series graph like price/time charts are. You don't plug in 12:00 GMT on 1/04/2008 into an equation to compute the price on 1/04/2008 at 12:00GMT like we did by plugging in 3 for the x-variable to compute the f(x) value.
Like I said before, price and time are plotted on a time series graph, not on a coordinate plane like a function. The time intervals on a time series graph are discrete (i.e. days, hours, 4-hrs, 1-minute, etc), so are the price points (pips). Coordinate planes allow for continuous variables. We do not plot continuous pips as we do not use coordinate planes. We use time series charts.
Perhaps you and I have a language barrier here. You are claiming to be able to plot price as a function of time on a time-series graph using discrete intervals and independent variables. Forgive me if I just don't "get it".
Also, such a function P(t) would be able to perfectly predict the future. It would be a clear crystal ball metaphorically extending "forever". We would be able to call up any time in the future and our function would give us the price at that time with zero error. We could also "back-test" such a relationship by enterring 3:14pm 120,000 BC for "time" and computing the "price" of, say, the GBP/USD. The function should compute to "undefined" since there were no GBPs or USDs in 120,000 BC. Such a function would also be able to tell me the exact price that the GBP/USD will be trading at on my 40th birthday (12/2/2019) at high noon central time. If your "function" cannot do that today, then it is not a mathematical function. There is no such ambiguity in f(x) = 3x.
But, I have been wrong in the past. If some such crystal ball were available, I would surely like to see it, as the moment I laid my eyes upon it I would be seeing the future. At that point, I would not hesitate to eat my words and I would be the first to admit that I was dead wrong.
I desire to be educated further in the P(t) = mt + b ways