If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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I am a little bothered by the scale you used - on a scale from 0-5 where:
0: no and don't want to sign up 1: no, still considering it. 2: no, would like to but can't afford it. etc. towards more interested in cryonics.
If we take an ordinary human who has barely even heard that cryonics is a real thing - the entry point to the scale is somewhere between 0 and 1 on the 6 point scale. Which means that as much as we have detailed data of states above 1; we don't have detailed data of states below 1. Which means that we potentially only recorded half the story; and with that; we have unrepresentative data that skews positively towards cryonics.
Upvoted because this is a good critique. My rationale for using this scale is that I was less interested in absolute interest in cryonics and more in relative interest in cryonics between groups. The data and my code are publicly available, so if you are bothered by it, then you should do your own analysis.