The Practical Fractal: The Holy Grail to Trading by Bill Williams PhD of Profitunity Trading Group is a 20 year old video from a talk Bill gave after writing the 1st edition of Trading Chaos

Futures and forex trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing ones’ financial security or life style. Only risk capital should be
used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results.

Risk Disclosure: No representation is being made that any account will or is likely to achieve profits or losses similar to those discussed within this channel. Our course(s), products and services should be used as learning aids. If you decide to invest real money, all trading decisions are your own. Our track record is from trades given to subscribers in advance and are not hindsight. The results may have underorover compensated for the impact, if any, of certain market factors, such as lack of liquidity. Hypothetical or simulated performance results have certain limitations. Unlike an actual performance record, simulated results do not represent actual trading. Simulated trading programs are subject to the fact that they are designed with the benefit of hindsight. The risk of loss in trading commodities can be substantial. You should therefore carefully consider whether such trading is suitable for you in light of your financial condition.