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by aloe_falsa 1026 days ago
The telescope could have been invented thousands of years ago - ancient Egyptians could polish lenses. Ditto for the sextant, optical telegraph, the printing press...

> It would be fun to imagine Antiquity with many modern inventions in it.

Or the modern era with inventions that are due to appear in thousands of years, but which we could easily replicate if we only knew where to look.