In the book 'Market Wizards: Interviews with Top Traders', the chapter on Bruce Kovner has an interesting passage that reads:
I do both TA and fundamental analysis and thought it was interesting to compare TA to a doctor taking a patient's vitals before making any further assessment of their current health.For me, technical analysis is like a thermometer. Fundamentalists who say they are not going to pay any attention to the charts are like a doctor who says he’s not going to take a patient’s temperature. But, of course, that would be sheer folly. If you are a responsible participant in the market, you always want to know where the market is—whether it is hot and excitable, or cold and stagnant. You want to know everything you can about the market to give you an edge.
Technical analysis reflects the vote of the entire marketplace and, therefore, does pick up unusual behavior. By definition, anything that creates a new chart pattern is something unusual. It is very important for me to study the details of price action to see if I can observe something about how everybody is voting. Studying the charts is absolutely crucial and alerts me to existing disequilibria and potential changes.
Schwager, Jack D.. Market Wizards: Interviews with Top Traders (Wiley Trading Book 73) (pp. 60-61). Wiley. Kindle Edition.