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by anamax 1707 days ago
20 is barely enough. You really want 30-40.

The problem is variance. If 70% fail and only 10% produce meaningful returns, you want >>10 so you have a reasonable chance of getting average returns.

It's possible to get lucky with 5-10 startup investments but the common result is "lost everything" with "broke even" a close second.

This applies to working for startups as well....