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PhilPapers survey mini-series: The many-worlds interpretation of quantum mechanics

In November 2009, David Bourget and David Chalmers conducted the first PhilPapers Survey of the philosophical views of professional philosophers. They published a paper on the results ("What Do Philosophers Believe?"), and made the raw data available. Bourget and Chalmers are now planning a second survey, to be conducted in February 2020 and published shortly thereafter, just over ten years after the original survey.


The many-worlds interpretation is an interpretation of quantum mechanics that asserts that every time a quantum experiment with different possible outcomes is performed, all outcomes are obtained, each in a different world, even if we are only aware of the world with the outcome we have seen (Vaidman, 2014). Hence, the Many-Worlds Interpretation of quantum mechanics holds that there are many worlds which exist in parallel at the same space and time as our own.

In the 2020 PhilPapers Survey, what percentage of respondents will "accept" or "lean toward" the many-worlds interpretation of quantum mechanics?

Note that it is expected that there will be an option to allow people to select multiple answers (source).


This question resolves as the percent of all respondents that "accept" or "lean toward" the answer "many-worlds" on the "Quantum mechanics" question. (For the full question, including all answers available to survey respondents, see here (scroll down to 'Additional main questions').) This question closes 2 days before the release of the results of the 2020 PhilPapers Survey.

The relevant percentage of respondents will be calculated using the default settings in the previous survey, i.e. with 'Target faculty' for 'population' and 'All respondents' for 'AOS'. If the display options change, then the admins will select that combination of options that best matches those settings. If the defaults change, we will still use the 2009 defaults.


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