Against multi-page forms.

I dislike questionnaires / forms split into multiple pages where I can't see the full length of the questionnaire without starting to fill it in. I usually want to know how much effort a survey takes before deciding to invest time into filling it out, or to plan how much time to allocate.

Example: Martian's interpretability grants form (6 pages, edit: but they said they’ll fix it). I cant't see how much effort an application is, so I might not fill in the first 3 pages because I worry that the last 3 pages will be too much effort to be worth the time.

Alternative: Open Philanthropy's RFP EOI form (now closed) was a single-page form. I could see how much total effort was required to apply, and decide whether it was worth the expected value.

Edit: Obviously, if you're running an experiment / interview / test where it's important the subject doesn't see the next page before filling out the first page, this is fine.