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I've been thinking about tech that doesn't get the credit it deserves. It's easy to focus on the shiny new gadgets, but what about the innovations that quietly revolutionized things in the background or paved the way for later breakthroughs?
For example, think about the development of robust error correction codes. It's not something most people think about, but without it, everything from CD players to modern internet interaction would be vastly less reliable. It feels like frequently enough the "invisible" improvements get overlooked in favor of things you can actually see and touch.
What are some other underrated tech innovations, particularly from the past, that you think deserve more attention? What seemingly small improvements had a huge impact that we mostly take for granted today? I'm genuinely curious to hear what other people think.