Success Metric vs. Fail Condition — To the Pain!

Declaring Victory!

A success metric is the idea that given any hypothesis, there is a metric which will indicate that, in the lean startup and experiment design jargon, the hypothesis is validated. Or simply put, it’s a good idea.

Flying Penguins

The Slippery Slope of Failure

This is a common problem with startups:

The Scientific Method!

There is a general problem well known to science…

Setting the Fail Condition


This is more than just semantics.

Key Takeaways

  • You can never validate a hypothesis, only fail to invalidate it. -Tweet This
  • Set a Fail Condition instead of a Success Metric. -Tweet This
  • Penguins can’t fly. -Tweet This



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