The Crypto Fear and Greed Index summarizes market emotion from price, volume, social, and surveys.
Extreme fear can coincide with capitulation; extreme greed with euphoria. It is not a timing oracle.
In research workflows, Fear and Greed Index is usually interpreted with Market sentiment, Bull market, and Bear market rather than as a standalone signal. Acceleration often matters more than absolute mention counts. Loud but fading hype is a different setup from quiet but rising chatter.