This is some good irony right here! Aside from the fact that there can be nothing more 'accurate' in fiction than the Author's own words ... the 'Philosopher's

This is some good irony right here! Aside from the fact that there can be nothing more 'accurate' in fiction than the Author's own words ... the 'Philosopher's Stone' has mythological reference that 'Sorcerer's Stone' obviously doesn't. And using American words for 'the toilet' that the characters may not have used themselves, is not 'more accurate'. And it mostly has little to do with intelligence. As a reminder to everyone - America is a very big place, with a lot of different people, often with different roots, migration status etc.. It's feasible kids from New England would adapt to the English version without any fuss, but beyond that, a lot of this vernacular would just be 'very foreign'. We're talking about kids with limited vocabulary to start with, not the guy with an 'English Accent' in the documentary.