Is it normal to do this without explanation?
Sometimes I am trolling. And if someone thumbs down my troll comment, I can totally understand.
But do you want to know what irritates me? It's when I write a serious comment, dedicated to the search of truth, and someone simply thumbs it down, und leaves without engaging in a discussion!
Aren't we here to discuss things? What are you afraid of? How am I supposed to realise that the points I expressed in my post are wrong, if you don't discuss it with me? How am I supposed to change my mind if you just say "wrong!" and leave?
Is it normal to thumb down serious posts without explanation?