Actually, the only thread a ten-year-old knows is the one you might play cat&#x27;s cradle with. It isn&#x27;t obvious why there should be anything exclusive about one, or why you&#x27;re better off keeping multiple of them &#x27;separate&#x27;.<p>Functions are what something is for, as opposed to form. It isn&#x27;t natural to think about their inputs and outputs.<p>It&#x27;s quite possible my solutions are too blunt and problematic, but these seem like real problems.