Maybe your father will be sharp in other things not computing. I will have good level of computing when i reach +75 but well, maybe newer concepts will escape me a little bit but maybe i have other skills that are even more sharper than you can imagine.
Yes and no. Your statement is true about under-the-hood stuff, but false about user interfaces. Your phone interface is not like Windows 95, still less like a green screen terminal talking to a mainframe.
LOL. Downvoted? I think most people browsing HackerNews will not be freaked out by minor UI changes 30 years from now. Even a 3 year old child can figure out how to use an iPad.
A lot of people spent their entire lives looking at a screen, performing some operations and little else. Above all people from the banking sector, where everything is organized in a hierarchical way. I remember bankers who only had one screen with a summary and that's all they saw before. Today everything has changed, as everything is done through computers, but if your father is an older person, he probably hardly ever used computers.
