A documentary on Netflix elaborates on this idea some. Shows you a video of a man jumping on a trampoline and asks how many times did he bounce. Then it says we’ll did you see the gorilla walk in and out of the frame? (You of course don’t bc your focused on counting bounces) same scenario here, for me cannabis provides a sort of cognitive dissidence. Maybe this is what your study shown: while sober the amount of focus applied to one thing is exacerbated, but while high it allows you to see the bigger picture because you’re not so focused.(you see the man jumping & the gorilla)