The Momentum Means That Kind of Length

I've reading a couple of k j packer books that are in a series. The first one has very, very short chapterso the chapters are one minute or two minutes or three minutes and i'll read tens of them. And then the other book, the sequel, has chapters that are like 25 minutes. A to to ha, a difference just because of the yavo shaf a length. But sometimes just the momentum means means that kind of length as well.