1. Not really.
jQuery is designed not to fail. So if there's no `.box` on the page, jQuery will not do anything.
`querySelector` may return null, so `$('.box').hidden` will hard break your page if you're not careful enough
2. `$('.box').hide()` is just one such example.
The hilarious https://youmightnotneedjquery.com/ shows that jQuery remains more consistent, concise, and composable than most things in modern browser APIs