All these questions and more are answered in a Slate special report: Geezers-A Special Issue on Old People. In honor of the oldest presidential nominee in the history of the United States, they delve into a myriad of issues ranging from incontinence to what it feels like to be 100 years old.
I know what you're thinking. You're thinking "But John McCain is a robot. How much information can I learn about him from reading these articles?" Well, as it turns out, old people and robots have a lot more in common than you would think. So start reading and start relating.
Remember, aging is the real change we can believe in.