For the record this is an example of the "Fencepost error" where the last item in a range gets double counted as the first item in the next range and is incredibly common in dyscalculia (the math version of dyslexia) as people will have "visual number lines" in their head that cover ranges of numbers but the ends get double counted, so there will be a 10-20 number line then a 20-30 number line.
I suspect TheJosh had something like that with the week where he visualized it with Sundays at both ends but lacked the self awareness to realize that this was not a universal representation.
I suspect TheJosh had something like that with the week where he visualized it with Sundays at both ends but lacked the self awareness to realize that this was not a universal representation.