Cool!
> One downside, in terms of UX, is that I couldn't find how to put a
> Captcha on submission of the form, but only on the welcome screen before
> accessing the form. At least for the future, I imagined asking the
> questions upfront and then validating them with a Captcha when
> submitting the form. But we can probably workaround this with other
> types of attention check questions.