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Irrelevant if you are working with computers and digital equipment.

Highly relevant if you are using T-squares, compasses, and dividing calipers.

It's just a matter of working with base elements that are divisible by 3 and 4 really.

So instead of buying 100cm planks, buy 120cm planks?

And eventually you’re going to want a name for your 120cm unit. But that’s not allowed in metric because any named unit has to be base 10.

It has a name. It's the plank length.

It's pretty relevant with computers. If we were used to working in base-8 or base-16 in everyday life, numerous aspects of programming would be simplified.

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