I think of pacing as making sure that important events happen frequently enough that the reader doesn’t get a chance to quit reading. That doesn’t mean every scene has a turning point, but every scene has to have some event that affects the overall plot, or that scene is basically “skippable”. And every scene can help set up for a later turning point.
There’s a trend recently that calls for opening each scene “in media res”— with some kind of clever line (the “hook”), or sudden action or a line of dialogue.
This can be effective in drawing the reader in, but keeping her in requires more than clever lines. It requires a paragraph or two that anchors the scene in some specific place, time, and situation.