On Virgins and The Tooth Fairy

Before coming to any conclusions about what “works” or “doesn’t work”, and thus does or does not provide an edge, one ought to keep in mind that a given event -- such as price seemingly finding support or resistance at a trendline (or moving average, candlestick, Pivot Point, Fib level or whatever) -- may be only incidental to what is truly providing that support or resistance.

A fundamental misunderstanding of how "indicators" are calculated and what they're supposed to do can lead to all sorts of off-task behavior. We think we see the indicators indicating something, or not, and believe we have made an important discovery. We then devote our efforts to improving the hit rate and the probability of whatever it is we think the indicator is indicating when our efforts ought to be focused on determining whether or not the indicator is actually indicating what we think it's indicating. In most if not all cases, it isn't.

Consider the virgin being tossed into the volcano: sometimes it results in a great crop, sometimes it doesn't. Maybe tossing her in earlier or later will change the probability of a healthy crop. Maybe two virgins are better than one. Maybe six. Maybe tall virgins are more effective than short ones. And surely age is important. But does the robustness of the crop really have anything to do with tossing the virgin into the volcano in the first place?

The money under the pillow is not evidence of the existence of the tooth fairy, and spring will arrive regardless of whether the virgin is tossed into the volcano or not.