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Peter Drucker’s Feedback Analysis Just Got a Lot More Practical (Thanks to AI)

March 31, 2026

Peter Drucker once wrote “The only way to discover your strengths is through feedback analysis. Whenever you make a key decision or take a key action, write down what you expect will

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Sometimes, Everyone Agrees

January 27, 2026

I recently published a blog post arguing that over the next 5 years many commercial MMM engine developers might face an uncomfortable truth: their code and algorithms are not defensible. As part

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Marketing Measurement Has a Measurement Problem

Bill Grosso

In this essay, I want to convince you that, unless steps are taken, the future of MMM as a robust and commercially viable area for analytical decision-making products is in jeopardy. If the category continues on its current path, MMM risks joining the dust heap of analytics history alongside other once-promising technologies whose commercial claims raced ahead of any practical way to evaluate them before purchase. That’s a bold claim, and bold claims require both disclaimers and evidence. My disclaimers are simple: GDP is a boutique analytics consultancy. We are not selling an MMM product, and we have no intention of entering the space. While many of our clients run advertising and user-acquisition campaigns for which MMM could be useful (indeed, is useful), the market is already crowded with firms that specialize in building and implementing these systems.Read the Full Article

RECENT

Peter Drucker’s Feedback Analysis Just Got a Lot More Practical (Thanks to AI)

Sometimes, Everyone Agrees

Marketing Measurement Has a Measurement Problem

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