Sadly this shows literacy has nothing to do with critical thinking and where the most literate of us should yield a higher standard on consuming fake whatsapp forwards, this shows that it is not always the case. In Ancient times we also invented flying ( pushpak viman) and there is a Shiva temple buried under the Taj Mahal called Tejo Mahalaya? Somewhere in India if we dig deep, we will find fossilized versions of a prehistoric TV set complete with Netflix? Why did they not invent a device to erase all corruption and build some good infrastructure is what boggles my mind.
Why should critical thinking be an effect of literacy? There are people who are not literate by western standards, but pretty sharp(Michael Faraday) and those who are literate but not that clever