Technical analysis has validity - it is just patterns and data. It isn't perfect, because outcomes are still variable, and also consist of independent human decisions.

A pandemic is an edge case... However, markets react much more quickly than in the past (algorithms, global data, instant analysis of that data) - that technical analysis short term timelines have compressed.

If you want statistical breakdowns of each pattern, their movements, and outcomes - this book is a great reference. https://www.amazon.com/Encyclopedia-Chart-Patterns-Thomas-Bu...