Well the only way that could happen is if an adult will lose his ability to perceive things in dualities, which is not something I'd recommend but it's a free world and you gotta try everything once..
I do agree though that being able to see through the duality, especially when the duality of a scenario is in your favor and it'd be self-deprecating in a sense to dissolve that duality - that ability could have unbelievable benefits, but that's so different from what babies experience that I don't know if it even "counts"..