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Elund comments on 2014 Less Wrong Census/Survey - Less Wrong
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Took the survey. However, my answer for the probability of MWI is "Since MWI makes the same predictions as the standard interpretation, asking for the probability of MWI is meaningless. It is like asking "this glass is 50% full of water. What is the probability that it is half empty? What is the probability that it is half full?" I put 0 for the MWI question, but I'm not sure what you want for that.
For some of the other probability questions, my answer is "I don't have enough information to come up with a good estimate, and I also don't have enough information to come up with a probability that takes into account my inability to come up with a good estimate". Again, I put 0.
Also, after the test, I'm starting to get worried how you anonymize the questions. Releasing the data without a name attached is not anonymization, if the answers people give are enough to identify them.
Putting 0 is misleading. It implies that you're confident there is no chance at all. If you're really not leaning one way or another, your best bet is to just put 50, or perhaps even skip the question if you really don't want to give a probability.
Choosing 50% is availability bias. Just because the question is presented as a choice between MWI and everything else doesn't mean there are only two choices. There are zillions of choices; MWI is just the one mentioned on the screen in front of me.
I assumed you'd already factored in those other choices and still weren't leaning more for or against it relative to all the other possibilities combined. By "leaning one way or another", I meant along a hypothetical axis of "strongly believe" or "strongly disbelieve" for the given proposition. You have a good point about availability bias though. You can self-correct for that to some extent by decreasing your assigned probabilities, and we'd have to take availability bias into account while interpreting the probabilities given by other people.