Things that changed without me noticing:
Once upon a time, I knew the computer system everybody I talked to online was using. Why? Because most people online were computer nerds who would brag or complain about their systems, or the companies that made them.
You still see that a little in iPhone vs Android and in PC vs console in video games, but it doesn’t seem to be at the levels it once was, which was everywhere and always.
Things that changed without me noticing that I just noticed.