Maybe the concepts surrounding Frank Herbert's "Butlerian Jihad" are actually true?
"The series explains that humanity had become entirely complacent and dependent upon thinking machines; recognizing this weakness, a group of ambitious, militant humans calling themselves the Titans use this widespread reliance on machine intelligence to seize control of the entire universe. Their reign lasts for a century; eventually they give too much access and power to the AI program Omnius, which usurps control from the Titans themselves. Seeing no value in human life, the thinking machines—now including armies of robot soldiers and other aggressive machines—dominate and enslave nearly all of humanity in the universe for 900 years, until a jihad is ignited. This crusade against the machines lasts for almost a century, with much loss of human life but ultimately ending in human victory."
From the article, this is based on self-reported confidence, not some kind of testing or measurement of critical thinking skills. This could just boil down to feeling less confident with tasks you do less, which is sort of obvious.
"The series explains that humanity had become entirely complacent and dependent upon thinking machines; recognizing this weakness, a group of ambitious, militant humans calling themselves the Titans use this widespread reliance on machine intelligence to seize control of the entire universe. Their reign lasts for a century; eventually they give too much access and power to the AI program Omnius, which usurps control from the Titans themselves. Seeing no value in human life, the thinking machines—now including armies of robot soldiers and other aggressive machines—dominate and enslave nearly all of humanity in the universe for 900 years, until a jihad is ignited. This crusade against the machines lasts for almost a century, with much loss of human life but ultimately ending in human victory."
Source: https://en.wikipedia.org/wiki/Dune_(franchise)#The_Butlerian...