Another factor. Members using the invisible setting would also tally in.
I've always wondered about the multiple visits to same thread too.

Semi-related: I'm really glad they have the hover to see the first bit of the post on PC. I feel bad (this is stupid, I know) to add to the views when it turns out the post isn't what I thought from the title (a lot are very vague). But, it's probably related to the misconception that if people don't respond it means they don't care. Speaking for myself, I either don't know what to say or just can't handle replying on account of my own mental state.