IMO the worst side effect of current web of knowledge is what I'd call the illusion of knowledge. When it was more difficult to access and publish information, that imposed a much higher bar on what was being consumed. These days, people watch a 10-minute YouTube video or read a reddit comment or twitter thread and believe (perhaps unconsciously) that makes them knowledgeable in said topic. They will then, in an abso…
People also used to be confidently wrong all the time before the internet was ubiquitous, except then it was hard to quickly verify they were.
Long before the web, when I was a child, my father would chide me for my bold claims unsupported by facts with the phrase "Confident; but wrong."