"In what follows" in a sentence

Nat there's a subtle diff which I hope Man, C/C, or other expert will amplify

But in addition the speedreader will (unless he's 'way smarter'n me) be stopped in his tracks by the absence of an 'In' as in 'In what results....'

To TAATANE girding his loins: 'smarter'n' 's an actual word, no kiddin', lookitup

...tho not sure whether " 'smarter'n' 's" 's

...'Trol urslf nw....

I'd remove "in" and write the sentence as:

What follows is that they would be more attentive and more motivated.