Keep H1 'Learn without limits' as the brand tagline. Change the hero subheadline from the generic 'Start, switch, or advance your career. Grow with courses from top organizations.' to a concrete outcome statement. Example: 'Get job-ready certificates from Google, IBM, and Stanford — 91% of Coursera learners report a positive career outcome. Start free.' This reframe introduces three conversion drivers without restructuring the page: (1) names the credential providers (authority), (2) anchors to the outcome stat (social proof), (3) makes 'free' explicit in the subheadline context. The 'Join for Free' button remains the CTA.
Concreteness Effect — specific claims ('Google, IBM, Stanford') outperform abstract ones ('top organizations') because they are easier to retrieve, verify, and anchor to. Social Proof (Cialdini) — embedding '91% of learners' in the hero subheadline means the outcome stat performs persuasion work for the visitors who never scroll to its current position. Risk Reversal — 'Start free' in the hero subheadline reinforces the comfort signal at the exact moment visitors are evaluating whether to engage.
Directional: Concreteness Effect research demonstrates that specific named credentials and numeric outcome claims outperform generic equivalents in persuasion contexts. Reframe fixes typically yield 0.5-3% conversion uplift. A/B test recommended.