Guessable web URLs?

Recently I've landed on a blog post from 2011 titled 'URL as UI' . One claim caught my eye in particular - 'an ideal URL is guessable': Synonyms should ideally redirect. If you have a support page at /support and a user types /help, is that really such a bad request? Don't show them a 404 — send them to the page they're looking for! Yes, in principle that looks like a great idea. You show…