It was New Year’s Eve 2023. I was on holiday in Tamil Nadu, India. At the hotel party, they were blasting music from the 1980s. They started to play the song “Gloria" by Laura Branigan, released in 1982. And amazingly, I found myself singing along. I had not heard that song since my high school days. How was it possible for me to recall the words to this song almost 40 years later?We all know what memory is, but...