Samuelson's random-walk analogy for stock prices was mathematical showing-off dressed up as a claim about the real world.

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Our reading — they may agree, disagree or merely touch the same thing. Closest first: a shared subject counts for most, then how near the wording is.

• Neither monetarist money-supply-focused models nor Keynesian macro models have outperformed simple random-walk models at forecasting the macroeconomy. TCTyler Cowen1 Oct 2023similar wording
• Even the most advanced AI cannot be followed blindly in investing, where value added is zero-sum and what is widely known is therefore worth little. RDRay Dalio10 Jun 2026similar wording
• The claim that passive investing has made markets less efficient is overwrought. ADAswath Damodaran18 Jun 2026similar wording
• Numbers offer a false precision: which metrics you choose to look at, and whether a five percent rise is good, are both art rather than science. JZJulie Zhuo21 Sept 2025similar wording
• The goal was never good simulation; it was answering counterfactuals, and a value function does that job as well as a simulator does. SLSergey Levine12 Sept 2025similar wording

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