What other things have quietly come back that we all assumed were gone?
I was reading about the measles outbreaks happening around the US and had one of those weird moments where I realized I'd mentally filed measles into the same category as things like polio, Blockbuster and payphones. Not because I know much about infectious diseases. I just genuinely thought it was one of those problems people had already solved before I was born. It got me thinking about how many things we treat as permanent when they're really not. You grow up assuming certain technologies, social norms, institutions or even public health wins are just part of the background and then one day you find out they were only sticking around because somebody was actively maintaining them the whole time. I think a lot of us underestimate how much of modern life works that way.
What is something you assumed was gone forever only to realize it wasn't?