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I came across this today and thought people might be interested. It’s a piece in Buddha Weekly about the advantages and disadvantages of learning the dharma from the internet, and it talks about the role of a teacher.
It’s unfortunately not a very deep article and relates to a few other sources, but it does touch on the highlights. I think because gathering information on the internet is so relatively quick and easy, it becomes the first port of call in many cases and people are tempted to not look further.
Lion’s Roar also did a similar article a while ago...