JOHN WILCOX
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How to calculate probabilities: The Bayesian calculator

11/10/2021

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the tl;dr key points

  • This post describes and provides a Bayesian calculator to supplement a philosophy of science course taught at Stanford University
  • The calculator is potentially useful for a variety of purposes, including calculating the probability of propositions in philosophical, scientific and mundane contexts
  • The calculator also features some examples of Bayesian calculations, just to help others get an intuition for how to use the calculator

THE BAYESIAN CALCULATOR: WHY YOU SHOULD CARE ABOUT IT

Tomorrow, I'll be giving my last lecture on Bayesianism for the course "Phil 60: Introduction to Philosophy of Science" at Stanford University. 

There, I'll be talking about a Bayesian solution to the problem of underdetermination, associated with Pierre Duhem and Willard van Orman Quine.

The problem essentially concerns the limited ability of evidence to support or rule out isolated hypotheses. For example, if you run an experiment to test whether a putative piece of iron melts at 1538 degrees Celsius, and the piece doesn't melt at that temperature, then you have at least two possible responses: you could rule out the hypothesis that iron melts at 1538 degrees Celsius, or you could instead rule out the hypothesis that the piece of metal was actually iron as opposed to another substance. As Duhem put it, the experiment itself does not tell you which specific hypothesis is false: 
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    John Wilcox

    Interdisciplinary researcher
    @ Stanford University
    @ fp21

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  • Home
  • Curriculum Vitae
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    • Teaching Methods
    • Philosophy of Science
    • Ethics in a Human Life
    • Epistemology & Probability
    • Logic
    • Applied Research Methods
    • Teaching Evaluations
  • John's Blog