Build what matters
Write the problem without naming your solution
If your problem statement contains the feature, you may have skipped a step.
Follow an idea further.
Build what matters
Test the assumption that could stop the idea
The smallest useful experiment is the one that answers an important question.
Build what matters
Find the first moment the product helps
Signing up is a step. Receiving something useful is the reason for taking it.
Build what matters
Choose a number tied to the job
A growing number is useful only if you know what it tells you.
Build what matters
Do the job by hand once
A manual version can expose the details an automated plan leaves out.
Build what matters
What brings someone back?
A reminder can prompt a visit. It cannot create a reason to care.