I think it was Francois Demachy that said in an interview that he could look at a Formula, sorted by Tenacity, and have a clear idea of what it would smell like. Massive experience will do that and all, but regarding tenacity...

When organizing a formula, would one just add a field for tenacity, with a set number for each line item? Or would the evaporation curves play into it? Do you just keep a running list of how top-notey something is in your head and kind of intuit your way through it...

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