What would be the effects on a human civilization if its convention of number display is little-endian, i.e. its people represent one hundred and twenty-three as
321 rather than
123 (assuming they are still reading LTR (left-to-right))?
Some simple results I would expect would be that people focus on the fine differences rather than the large differences (as I asked in this question on math.SE), so people may be more careful about numbers (e.g. careful with money). But I doubt if this makes sense, because people would eventually read the end too.
Other differences that I found in my question on math.SE include ease to organize handwritten arithmetic calculation in compact space (you write in LTR, so you can start the vertical form from the left, and you can avoid wasting space). But I'm not sure what kind of effects this can have in a large scale.