I'd say it's arguably a degenerate case, but it's very arguable.
Few people would claim that each position in an order is a different category. And if I asked someone to categorise a pile of papers and they handed me back a single stack, I'd be unimpressed.
Few people would claim that each position in an order is a different category. And if I asked someone to categorise a pile of papers and they handed me back a single stack, I'd be unimpressed.