When viewed from distance, progress we had in last 100 years is just magical, and sometimes there are local pockets of old technology. My father told me story a

When viewed from distance, progress we had in last 100 years is just magical, and sometimes there are local pockets of old technology. My father told me story about how he learned electronics from an old book where they started with a "crystal radio" from scratch (like finding a conducting region in some mica crystal) and he tried to buy some old diodes in local electronics shop and they were already obsolete and they had much better diodes already on stock. When I started, I had to buy some discrete transistors and amazed him with minimal quantity order of 20pcs, and I bought 100 just because it was still pennies. Recently I was amazed by ssd's being so cheap. We have A LOT of progress, but we have literal explosions of progress in adjacent areas that diminish that little slower progress, so people say "oh, yeah, the progress times are behind us now".