What this model does
The lab applies fixed, visible rules to three invented laptops and two invented sellers. Budget and seller availability are hard filters. Eligible products are ordered using a weighted combination of portability and creative-work suitability. The weights change with your selected priority.
This is an educational model, not a live AI response, a real product comparison or a validated ranking formula. Its purpose is to make assumptions inspectable. Real systems can use different information and return different answers.
The commercial question behind the interaction
When the winner changes, ask what changed first: suitability, eligibility or the available evidence. In a real investigation those explanations require different follow-up work. A stock constraint belongs to commerce operations; a missing specification belongs to product information; an unexplained model preference requires further measurement.