They could interpret the input data differently. For example, a decimal mark difference[1] between locales (like comma instead of a period in floating point nu

They could interpret the input data differently. For example, a decimal mark difference[1] between locales (like comma instead of a period in floating point numbers) could yield bad results. [1] https://en.wikipedia.org/wiki/Decimal_mark https://en.wikipedia.org/wiki/Decimal_mark