What is the fear & greed index for bitcoin?
Could you elaborate on the concept of the "Fear & Greed Index" for Bitcoin? This metric seems to play a significant role in gauging the sentiment surrounding the cryptocurrency market, yet I'm still unclear about its exact meaning and significance. Could you explain what it measures, how it's calculated, and what investors tend to look for in its fluctuations? Understanding this index could help me make more informed decisions in my cryptocurrency investments.