>> ...except that then I'd have to somehow remember the correct way to do 
>> matrix multiplication. (Something which I never get right with more than 
>> 50% probability...)
> 
>   Then you just end up using left-handed coordinates for your cross product
> rather than right-handed. In other words, it only affects the sign of the
> result.

Oh, does it?

With general matrix multiplication, getting it wrong tends to really 
mess things up. But in the specific case of a cross product, maybe it 
doesn't...

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