What crucial subjective element defines contemporary diet engines beyond 1975 optimization models?

Answer

Incorporation of personal taste and local context.

Modern diet recommendation engines are distinguished by their move toward integration of qualitative, real-world factors that were entirely ignored by early optimization models. While Stigler focused solely on nutrient targets and cost, contemporary systems must weigh these hard constraints against soft constraints derived from the user. This includes explicit personal taste profiles—such as a stated dislike for certain food groups—and immediate local context, like the regional availability of fresh ingredients, ensuring the suggested plan is both nutritionally sound and personally viable.

What crucial subjective element defines contemporary diet engines beyond 1975 optimization models?
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