Bill Gates Sr. answered the question this way: I can relate to the answer the late Bruce Bliven, a former editor of the New Republic, was reported to have given when someone asked him what it felt like to be an old man.
He said, “I don't feel like an old man. I feel like a young man with something the matter with him.”
How do you avoid, prevent or postpone getting "something the matter" with you? I second what others in this thread have said: attend to diet and exercise, take care not to injure your eyes, ears, back or knees. Diet might be the most important place to start - have a look at https://gamechangersmovie.com/
Alpha Go has generated a lot of activity in the weiqi community! I guess that's what happens when your AI beats the world champion in a match viewed by 60 million people (in China alone).
Fun fact - the most popular subject for debates in the original Coursera course "How to Reason and Argue" was diet. We've got a lively debate going here in the comments below - bravo!
I myself am most interested in what medical doctors (MD's) have to say about the question of plant-based diets, with reference to peer reviewed scientific journal articles. On the one hand, we've got high-profile MD's such as Dean Ornish, Caldwell Esselstyn, Michael Greger, Neal Barnard, Joel Fuhrman, James Lomis and Matthew Lederman arguing for the benefits of a plant-based diet. Can someone provide links to MD's who take an opposing view?
I'd start with a movie, not a book. The movie is "Game Changers", directed by James Cameron, and released last month on Netflix and Amazon Video. If you're skeptical about the science behind the movie, read the critique published in Men's Health magazine along with the rebuttal from one of the MD's interviewed in the film.
Next I'd read "The Engine 2 seven-day rescue diet" by Rip Esselstyn. If you a more in-depth treatment, try "How Not to Die" by Michael Greger, MD. If you want scientific journal articles, I recommend the work of Caldwell Esselstyn. MD and Dean Ornish, MD. Dean Ornish's TED talk is also a good reference.
This thread brings back the memories - I was an editor at a Ziff-Davis computer magazine back in the day.
Looking back on all this, the only lasting legacy I can identify is the linux windows emulation layer (wine), which exists only because Microsoft was required to make the Windows API public so it could be used by OS/2.
Given the difficulty of getting an ancient version of Windows running on currently available hardware, linux/wine is now the only practical way to run a lot of old Microsoft Windows application software. If it weren't for wine (which was made possible by OS/2), that application software would be unusable.
von Neumann was very anti-Soviet in his political views, yet he worked with (and was co-inventor on a nuclear bomb patent) with fellow nuclear weapons scientist Klaus Fuchs. Fuchs was a spy who passed von Neumann's classified work on to the Soviets. Despite his evident genius in so many areas, von Neumann apparently failed to discern the motivations of his colleague.
How do you avoid, prevent or postpone getting "something the matter" with you? I second what others in this thread have said: attend to diet and exercise, take care not to injure your eyes, ears, back or knees. Diet might be the most important place to start - have a look at https://gamechangersmovie.com/