For today's diet engine developers, what defines success, contrasting Stigler’s metric?

Answer

Maximizing user adherence and satisfaction.

The standard for success has undergone a significant evolution. For Stigler, success was precisely quantifiable: minimizing the monetary outlay required to satisfy nutrient minimums. For contemporary engine developers, however, meeting technical requirements is secondary to user adoption. The practical application of any diet recommendation hinges on whether the user actually follows the plan long enough to achieve results. Therefore, modern success metrics center around maximizing adherence and satisfaction, which are complex, subjective measures crucial for a system’s real-world viability.

For today's diet engine developers, what defines success, contrasting Stigler’s metric?
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