Startup Validation term
Problem-solution fit: meaning, examples, and AI prompt use.
Tests whether a real customer segment has a painful problem and believes the proposed solution is worth trying.
What it means
Plain meaning
PSF: Tests whether a real customer segment has a painful problem and believes the proposed solution is worth trying.
Aliases
PSF, problem validation, solution validation
People say / experts say
People usually say
- startup idea
- validate idea
- idea validation
- problem solution
- market validation
- founder idea
Experts usually say
Problem-solution fit, Customer segment, Jobs to be done, Evidence standard
When to use it
Use it when
Your rough ask sounds like: startup idea, validate idea, idea validation. The term gives your research assistant a clearer problem shape.
When not to use it
Do not use this term to seek approval for an idea. Use it when you need evidence, assumptions, decision criteria, or behavior-based learning.
Copy-ready handoff phrase
Before and after
Weak ask
Validate this startup idea.
Exact Terms ask
Evaluate problem-solution fit by separating customer pain, current alternatives, proposed solution, and evidence quality.
Prompt templates by use case
Research prompt
Turn this idea into research using Problem-solution fit and adjacent concepts: Customer segment, Jobs to be done, Evidence standard. Separate assumptions, evidence, and decision criteria.
Interview prompt
Write behavior-first customer questions that test Problem-solution fit without leading the participant.
Decision prompt
Define the evidence required to decide whether Problem-solution fit is strong enough to continue, change direction, or stop.
Common mistake
What goes wrong
Asking whether an idea is good before defining the assumption and evidence standard.
Better move
Use Problem-solution fit with the related vocabulary trail: Customer segment, Jobs to be done, Evidence standard.