@Tatsumi Yes, I agree on the comprehension part as you need good comprehension to scan documents for research, etc. Definitely, the more I practice the easier and better the comprehension!
I suppose when I say 'digest' I mean more than comprehension. See, I just don't enjoy speed reading as much - it's a means to an end, for me. My personal preference is to pause, thoughtfully consider what I've just read, perhaps put the book down for a little to think or write about it, before resuming. That's what I meant by 'digesting' it - so it is a purposeful slowing down in order to fully enjoy what I'm reading. :)
@Randomlygenerated I suppose I get that. But you can still do that, with a faster base reading speed. :/ I do that. Like, when I see a word I don't know, I'll stop and look it up. Or, when some deep concept is thrown out, I can still stop and be like "hmm."