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.
That book is essentially a collection of newspaper horoscopes.
Trading off data and patterns is a valid strategy, but the book you referenced doesn’t show you how to do that. (drawing pictures over charts and making subjective conclusions based on what you drew is not a data driven strategy).
Read the recent book on Rentech (the man who solved the market is the title I believe) to better understand how difficult it is to actually beat the market using data.
Once you read about a firm who has consistently beat the market—-and how tiny their edge actually is—-you’ll put the notion that you have the resources to do so on your own to bed.
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...