Make better product decisions before they get expensive.
Sharper judgment for designers, PMs and builders — not more theory to remember.
3 minutes · no signup · 15 laws free
- Decide
Before the definition: a real call comes first.
- Notice
What others miss, before the review meeting.
- Prove
What actually works: the behaviour, not the confidence.
Find the cart.
Two shops, one after the other. Click the cart as fast as you can. We time it.
Two rounds. Nothing is saved.
The cart in its usual place, top right, is found faster.
That's Jakob's Law: people bring expectations from the products they already use.
What changes
Three things you'll do differently on Monday.
- See the problem earlier.
Train your eye before the review meeting.
- Explain the decision clearly.
Turn instinct into shared language.
- Ship with evidence.
Check the behaviour, not the confidence.
Start with a game. Keep building your edge.
Each SplitFire product closes a different gap between knowing good product work and doing it.
UXArcade
Fifty-five interactive laws built to develop recognition, not recall. Three to five minutes each: play the consequence, then earn the name.
Enter UXArcadeDesign Protocols
Focused skill files that encode a professional workflow and its human checkpoints — so an AI agent follows your process instead of improvising one.
Browse the protocolsInterface Proof
Claim-to-evidence verification for accelerated builds: does the interface actually do what its explanation says it does?
Follow the experimentData Arcade
A future data-literacy cartridge. Nothing built, nothing dated, nothing implied.
Read the ideaFrom instinct to evidence
Each step answers a different question. Together they make a loop that survives real product work.
- 01
Feel it
Begin with a real decision, not a definition.
- 02
Name it
Give the instinct a precise shared language.
- 03
Use it
Turn the principle into a repeatable move.
- 04
Prove it
Inspect the artifact and the behavior that shipped.
- No invented numbers
- No dark patterns
- No theatre metrics
- No confident hand-waving
Turn scattered expertise into a team capability.
One practical language for critique, decisions and proof across designers, PMs and engineers, reinforced through experiences they remember.