One of the book that I read is The Signal and The Noise: Why So Many Predictions Fail–but Some Don’t. New terminologies that I learned while reading the book are Negative Feedback and Positive Feedback.

Negative Feedback is a condition when you raise your price tag and you get lower sales in return, and vice versa. While, Positive Feedback is a condition when you raise your price tag and the sales number is increasing, as well.