The "why" for me is Auction Market Theory. But in terms of day to day trading, I'm only interested in whether or not price rejects an extreme. If it rejects the upper limit, I go short. If it breaks through, I go long. There's no angst over "why" traders are behaving as they do at that particular moment. Either price breaks through the limit or it doesn't. Makes no difference to me.
This resonated with me so I wanted to preserve it in my journal.