Is Paul Graham right that you shouldn’t build startups at 17 and should focus on learning instead?
Source: [Hacker News](https://news.ycombinator.com/item?id=49502301)
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If you've done LeetCode's Design HashMap , you've implemented put , get , and remove . What that exercise usually skips is the part that actually breaks in production: what happens when someone mutates the map while another piece of code is iterating over it. I ran into this directly while buil...