# Greatest invention/discovery in the last 500 years?

**URL:** <https://boards.straightdope.com/t/greatest-invention-discovery-in-the-last-500-years/954804>\
**Category:** In My Humble Opinion\
**Created:** [November 23, 2021, 1:10pm UTC](https://boards.straightdope.com/t/greatest-invention-discovery-in-the-last-500-years/954804 "2021-11-23T13:10:33Z")\
**Posts on this page:** 1\
**Showing post:** 73

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**Author:** ![dougrb](https://avatars.discourse-cdn.com/v4/letter/d/76d3ee/32.png) [@dougrb](https://boards.straightdope.com/u/dougrb)\
**Post date:** [November 26, 2022, 3:43am UTC](https://boards.straightdope.com/t/greatest-invention-discovery-in-the-last-500-years/954804/73 "2022-11-26T03:43:50Z")

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Headband lights

About 20 years ago I had a colleague at work that had a headband light and I thought “I need one of those”. 20 years later I finally got one. Greatest invention ever.

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