We test what traders believe. Al Brooks price action and popular trading strategies — coded in Python, backtested on real data, results shared honestly.https://thequantscientist.com/https://thequantscientist.com/blog/buy_signal_bar/https://thequantscientist.com/blog/buy_signal_bar/What happens when you translate Al Brooks' most-used bullish entry trigger into a strict mathematical formula and backtest it on real SPY data? The results are more nuanced than you'd expect.Sun, 31 May 2026 00:00:00 GMThttps://thequantscientist.com/blog/coding-al-brooks-the-mathemtical-failure-of-the-always-in-rule-in-crypto-vs-equities/https://thequantscientist.com/blog/coding-al-brooks-the-mathemtical-failure-of-the-always-in-rule-in-crypto-vs-equities/What happens when you convert Al Brooks' Always-In Long and Always-In Short framework into a systematic Python engine and benchmark it across Bitcoin and the S&P 500? The data shows where the idea holds up, where it breaks down, and why market structure matters.Thu, 11 Jun 2026 00:00:00 GMThttps://thequantscientist.com/blog/coding-al-brooks-trading-range-detection/https://thequantscientist.com/blog/coding-al-brooks-trading-range-detection/What happens when you translate Al Brooks' trading range, barbwire, and breakout rules into Python — and point them at the Nasdaq, Dow, and DAX with the same thresholds? Here's what actually worked, and what still needs work.Sat, 06 Jun 2026 00:00:00 GMThttps://thequantscientist.com/blog/rsi-strategy-backtest-autopsy/https://thequantscientist.com/blog/rsi-strategy-backtest-autopsy/RSI 70/30, RSI divergence, and RSI + 200MA — three strategies taught on thousands of blogs and YouTube channels. I ran all three on 15 years of SPY data. Two lost money. One barely broke even. Here's exactly what the numbers showed.Mon, 01 Jun 2026 00:00:00 GMThttps://thequantscientist.com/blog/the-marketing-of-liquidity-sweeps-how-data-science-proves-ict-broke-a-100-year-old-edge/https://thequantscientist.com/blog/the-marketing-of-liquidity-sweeps-how-data-science-proves-ict-broke-a-100-year-old-edge/A data-driven deep dive into ICT Smart Money Concepts vs. Classic Price Action using Python backtesting on BTC-USD.Sat, 13 Jun 2026 00:00:00 GMThttps://thequantscientist.com/blog/trend-bars-vs-trading-range-bars/https://thequantscientist.com/blog/trend-bars-vs-trading-range-bars/Before you can use any Brooks setup, you need to read individual bars correctly. Trend bars and trading range bars are the foundation — here's how to define them in code and what the data shows.Sun, 31 May 2026 00:00:00 GMT