Elder mentions three trade systems: (1) Three Screen; (2) Parabolic; and (3) Channel
I already discussed the Triple Screen in Post #3. The Parabolic is a reversal system designed to keep a trader in the market all the time, which might be a nice fit for me whenever I am doing full-time trading. When a Parabolic stops you out of a long position, it tells you to go short at the same price. If it stops you out of a short position, it tells you to go long at the same price and time. Supposedly, this method worked well during the inflationary markets of the 1970s, but led to many whipsaws in later years.
Given the particulars of Numerical Price Prediction, it sounds to me like the Parabolic system has nothing to offer me. NPP uses carefully selected non-standard or proprietary moving averages that supposedly serve as valid representations of the actual direction in which price is headed. Consequently, waiting to be stopped out before switching directions wouldn’t make any sense. A trader ought to switch directions as soon as the designated trend lines convey a reversal.
Moreover, a key factor in NPP trade decisions are typical price ranges (universal, global, and local). For example, if the trend were to turn bearish at the bottom of the universal price range, it would not be a good idea to short the asset, especially if price were also at the bottom of the global and/or local price ranges as well. In this situation, there would be a high statistical probability that things might turn around suddenly and at any moment, possibly quite dramatically, so automatically switching directions at the same price and time would not make any sense. Perhaps this is part of the reason the Parabolic system led to so many whipsaws.
Also, Parabolic is based on the “move your stops only in the direction of the trade and never against it” rule, but again, since a trader’s actions when using NPP are at least theoretically based on a valid assessment of which way price is actually headed, this shouldn’t even be an issue. One would never have to lower his or her stops because the trader would already be in a new trade headed in that direction.
I didn’t read the details on Channel trading systems, but at a glance, NPP would seem to kind of fit best in this category. Actually, my system uses multiple (3) channels, which is why I used to call it MS. MAE (for multiple simple moving average envelopes).
There seemed to be all kinds of things one can do with channels, but again, I didn’t read the details in that I’d feel like I was wasting my time unless someone could guaranty me that whatever I was reading would work, and of course, no one can do that. (Plus, the explanations were short on details regarding settings and parameters.) On the other hand, there is no question in my mind whatsoever but that what I’m doing now works, so I’m just going to stick with it.
Unlike what I did read, I don’t use Bollinger bands, the Commodity Channel Index, Stochastic, MACD-Histogram or anything else with my system—just simple moving average envelopes or proprietary envelopes (typical price ranges) and carefully selected or proprietary moving averages (valid trend lines) are all I need with NPP.