By cbr
> most impactful technology of the 20th century was probably the bicycle
The smallpox vaccine is a strong contender. Smallpox killed 300m people in the 20th century, more than all wars combined. And we wiped it out.
See more about this article by clicking the link here: https://news.ycombinator.com/item?id=10168226
cbr comments on "Steve Yegge Grades His Own Predictions"
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