Or perhaps, you know, perhaps they happen to be a French citizen. "In France, the full stop was already in use in printing to make Roman numerals more readable,

Or perhaps, you know, perhaps they happen to be a French citizen. "In France, the full stop was already in use in printing to make Roman numerals more readable, so the comma was chosen." [1] By using an underscore, they avoid using the English style separator. 1: https://en.m.wikipedia.org/wiki/Decimal_separator#:~:text=In%20France%2C%20the%20full%20stop,mark%20the%20decimal%20units%20position https://en.m.wikipedia.org/wiki/Decimal_separator#:~:text=In....