Dev.to
6/17/2026

Demos That Wow vs Demos That Work
Short summary
Mocked product demos hide AI's two defining challenges—latency and non-determinism—letting clients fall in love with instant, always-correct assistants teams can't actually build. Functional proof-of-concepts surface these constraints early, generating honest feedback from real behavior instead of choreographed stories. The right choice depends on what you're validating: desire (mocks work), or actual feasibility (functional PoC required).
- •Mocked demos hide latency and non-determinism, selling a false picture of AI capabilities
- •Functional PoCs surface real constraints early and generate honest feedback
- •Use mocks for validating desire; functional demos for validating feasibility
Generated with AI, which can make mistakes.
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