After over 40 years in the Internet industry, I was preparing to retire and face life-threatening heart surgery (for hypertrophic cardiomyopathy) when I started on a new drug in a clinical trial. Within a week, not only were all my symptoms gone, so was my lifelong heart murmur and, most amazingly, so were physical limitations that had limited my athletic ability all my life, but that I never knew were caused by a heart defect. At 64, I can now run more than I ever could when I was a child and was always chosen last for athletics! Full of newfound energy, and happier and in better shape than I’ve ever been in my life, I have un-retired and returned to the faculty at the University of Michigan School of Information, where this fall I am teaching a course entitled “How to Change the Internet”.