Why You Like It: Decoding Musical Taste. Episode 1 | 58m 37s Video has Closed Captions | CC. Learn how science and culture shape musical taste with Dr. Nolan Gasser, live music, and a fun app.

A new book, “Like: The Button That Changed The World," delves into the convoluted story behind a symbol that's become both the manna and bane of a digitally driven society.

First, move Shakespeare’s original “As You Like It” ahead in time to the early 20th century and make its setting “A New York City of the Mind.” That’s bold and hazy enough.