Mike Krieger: I’ll share a funny anecdote about the Explore experiment. Facebook has all these internal A/B testing tooling and we hooked into it and we ran our first machine learning on the Explore experiment and we filed a bug report and I’m like, “Hey, your tool isn’t working, that’s not reporting results here.” And they said, “No, the results are just so strong that they’re literally off the charts. The little bars that show it literally is over 200%, you just should ship this yesterday.” The data looked really good.

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