There are other causes for conspiracism, too, I'm identifying them here, so anyone who wants, can get a more-complete view.

1. brain-chemistry being borked in a specific way: undermethylated-DNA disorder, & it was .. blood-histamines-level which identifies this ( undermethylated-DNA disorder has many different effects, autism being 1 subset, & I've tested his treatment, which works, so that part's replicated, but there's also a subset with depression, and other subsets, too ) - https://www.kobo.com/us/en/ebook/nutrient-power-3

2. Culture-level-2, subject-to-narcissism culture ( narcissism-culture being culture-level-3, out of 5 ) is breeding-ground for conspiricism - https://www.kobo.com/us/en/ebook/tribal-leadership-revised-edition

3. blatent non-accountability of authority produces conspiricism - https://www.kobo.com/us/en/ebook/they-knew-2

4. the specific economic-left + cultural-right ideology identified in that article is 1 of several bases for conspiracism. ( it looks like national-narcissism is a root of it, in this case )

At this point, I'm not betting anything on this list being complete, anymore.

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Most can be distilled down to "I don't trust the government, therefore..."