W. D. Gann is widely considered the father of rule-based trading, and his courses are sought after for their blend of mathematics, geometry, and time cycles. While Gann's historical success is documented—reportedly making 264 profitable trades out of 286 in one month—his original materials are famously dense and often wrapped in "mysticism".
Applying the Square of Nine and Hexagon charts.
Search volume for "WD Gann courses better" spikes in March and October. Why? Because that is when students have spent three months trying to draw fans and failing.