For the observers and timekeepers there needs to be numbers. F1 have numbers, but only the stewards/timekeepers use them, everyone else recognises the branding c/w helmet colour.
If they're neutral numbering (like phone code numbers) it make sense, they don't want an arguement brewing about who's ranked higher I suppose (AUSvNZ, PAKvIND, etc etc). Before anyone had mentioned it, I hadn't noticed the connection though.
Al.
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