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SoonerAviator
For any scheme, the randomness of the market guarantees that it will work sometimes. With mutual fund stock pickers, about a third beat their benchmarks in any given year. It is only when we look over a number of years that we see we have been "fooled by randomness."
Gedanken experiment: Hypothesize a stadium with 10,000 seats, approximating the number of mutual funds in the US. Instead of fund managers, fill the stadium with 10,000 monkeys (probably approximating the number of pundits and hucksters ). Give each monkey a fair coin and tell them to flip and sit down if they get tails. About 5,000 will still be standing after the first flip. Does that prove that those monkeys have heads-flipping system that should be taken seriously? Of course not. Now have them flip seven more times, again sitting if they flip tails. After those 8 flips, there will be about 40 monkeys left standing. At that point would you argue that those monkeys have a system that should be taken seriously? I still don't think so.
The concept that prices are random with a slight upward bias is a cornerstone of Modern Portfolio Theory, Harry Markowitz' "Portfolio Selection," published in 1952 (https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1540-6261.1952.tb01525.x). This is a highly counterintuitive concept but once you make the heavy lift to really internalize it, a lot of investing questions become much easier to answer.
No doubt. I understand the statistics surrounding it, and I've read a few books (not investment related) which discuss that same concept of what can be expected purely due to chance. My reading was more centered around Six Sigma/Lean Manufacturing, but the principle is the same about predicting human tendencies to focus on the wrong things because past success told them it was prudent to do so even if they were chasing outliers in the statistical noise level. I'd just hate to run the guy off by dismissing him outright. If he decides to come back with a full data dump of all of his trading and analysis, it would be worth judging it on its merits even though I'm unlikely to do more than buy and hold, personally.