I'm nearly certain the same person viewing the thread at different times of the day counts as multiple views. There are a few of us who check the board several times throughout the day and may add a few views each.
Even people who visit once a day may read a thread several times over the course of a few days as new replies are added.
I think if a thread/topic has--for example--4 pages, and you read through each page in one sitting then it's 4 views. I'm not sure about that one, though.
Also, most visitors to the board are lurkers...they read but don't post. Look at these statistics from the end of may.
And that doesn't count "guests" who also count as views when they look at a thread. (The total post count has nearly doubled since April, so the statistics may look a bit different now.)