CAPTCHAs don't prove you're human – they prove you're American

The myth that CAPTCHAs effectively verify human identity is being called into question, with some arguing they actually serve to confirm your American nationality. A recently completed CAPTCHA, presented as a challenge to discern a human from a bot, featured a question about the color of taxis in the United States. The responder, aware of the prevalent yellow taxis in the UK, found the assumption about their own cultural context to be a red flag.

This CAPTCHA question, among others, highlights how these tests often rely on cultural knowledge specific to an American audience. Such cultural assumptions raise concerns that CAPTCHAs may inadvertently discriminate against non-American internet users, who may not possess the same familiarity with American cultural references. The concern is that CAPTCHAs, designed to ensure human interaction, inadvertently reveal more about the test-taker's cultural background than their humanity.