Any technology from before the time of your grandparents, and often parents, is usually perceived to be "not fancy". Because then those elders can't tell you in your childhood what life was like before that technology. So in your lived experience that technology was always there. Reading history later on, doesn't change your emotional experiences.

Freeze LLM progress right here and the future is still totally inconcievable. Humans who have only ever known being able to talk to machines...

It's already inconceivable since today's teenagers have never not had an iPad.

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Disagree. There's lots of products and goods that have become less fancy as a result of changes in labor/material cost as industrialization ran its course and the old way is considered the fancy way.

Wood furniture joined with glue and pegs rather than inserts and screws. Solid wood furniture at all. Leather and natural fibers gave way to plastics. Ornate castings gave way to simple stampings and simply castings (where things are still cast).