Test your message
Paste a proposition – something you have seen in the wild, or something you are about to send. Arc reads how it is framed, shows which segments it naturally appeals to, and flags the language working against you. Honest feedback, line by line.
How the scale is anchored
Scored 0–10 by real members of each segment – GBNH pilot 2026. This is the measurement the Lens is calibrated against.
Measured cells take their band from the score under a pre-registered mapping – 7.0 and above receptive, 5.5 to 6.9 mixed, 4.0 to 5.4 wary, below 4.0 resistant. Every other cell stays on the editorial matrix and its published citations. No measured cell falls below 4.0, so ‘Likely resistant’ is unreachable for measured cells in v2.0.
Directional read from published evidence – not A/B data