Occam's Razor
Among competing hypotheses that predict equally well, the one with the fewest assumptions should be selected.
Read the original on lawsofux.com →
The scenario: registering for a free product webinar. Applied to UX, the razor means: analyze each element and remove as many as possible without compromising the function of the whole. Both forms below accomplish the same job — reserving a seat. One demands twelve answers first; the other demands three.
🔍 What changed
- 14 inputs → 3. Each removed field failed the razor's test: the form works equally well without it.
- Salutation, middle name, fax, and address served no one — deleted outright.
- Firmographics (company, size, industry) are enriched automatically from the email domain instead of being asked.
- Sales questions moved to a post-registration follow-up, when the attendee is already committed.
- Two opt-in checkboxes and a consent box collapsed into one plain-language sentence with a terms link.
💼 Explaining it to stakeholders
“Every field we ask before the ‘Register’ click taxes the exact people we ran this webinar to attract — industry studies consistently show that cutting registration forms from 10+ fields to 3–4 lifts conversion by 25% or more. We're not giving up the lead data: we get company details automatically from the email domain and ask the rest after registration, when people are invested. Shorter form, same intelligence, meaningfully more attendees.”