Why do random people feel inclined to answer “I don’t know” to questions posted on product pages, i.e. on Amazon? Someone asks “does this xxx?” and invariably someone will answer that they don’t know. Do they believe the question was asked of them directly?! So weird.

I can't find an example now, but Amazon sends an email something along the lines of "someone has asked you a question about a product you've purchased" and it really does sound like the question was asked to you directly!

Sure, I’ve seen those. Must be really curious people who think that of the millions (billions?) of customers Amazon has, that one of them asked THEM.