The engine can place every material and show you why a structure holds. It cannot smell what it built. That part stays yours.
Same brief, same formula, to four decimals, placed from a curated catalog of real materials with real physics behind them. A sentence becomes a draft, then the deterministic engine seats every material and works out the structure, the way a fixative stretches a drydown or a heavy base pulls a bright top down into the heart.
What it gives you is the how and the why, before you ever reach for a pipette. What it does not give you is the verdict on skin. Longevity, projection, sillage, the pyramid: all of it is estimated from the materials, never measured from a finished blend. A real maceration drifts from the model, and when it does, you record what you smelled and the page defers to you.
So treat it as scaffolding for your own judgment, not a substitute for it. It gets you to a lab-ready, reproducible draft faster than you could alone, then hands it back for the work no software can do, smelling it and deciding what is right.