Readings without questions

I’ve noticed that some readings in the CFAI text do not have any questions after the reading is complete. Does anyone know why CFAI decides to selectively not give questions for certain readings?

Usually they combine the concepts into questions found after later readings from what I’ve seen. I’m in Book 4 and some of the questions I’ve come accross have blended topics from Book 1.

Black Swan, Are you only relying on CFAI material or are using stall/schweser or any other study notes. Just curious.

Because

How’s the exporting business?