"For most experiences in life, no matter how good it makes you feel the first time it happens, it feels less good the more you experience it. A great restaurant may be a peak experience the first time you eat there, but bring you less joy each time you go there again. You may love hearing a particular song the first time it plays, but it won’t be as uplifting the 50th time as it was the first. But, what happens with the joy you get from doing something for someone else?" writes Art Markman, University of Texas (Oct. 9th, 2019)