Blink If You're Human

- The article describes a simple online "reaction-time test" that asks users to press a key when a color changes on screen, but secretly measures whether the response is too fast (under 100ms) to be a conscious human reaction. - The core idea: genuine human reaction times follow a biological floor of about 100-150ms. Any click faster than that is likely robotic or automated. - This is a lightweight, non-technical demonstration of a CAPTCHA-like concept—similar to how websites try to distinguish humans from bots, but without requiring users to solve puzzles or identify traffic lights. - The post is by Dynomight, a pseudonymous writer who often explores statistics, psychology, and subtle experimental designs in an accessible way. - The test highlights a quirk of human physiology—the "blink reflex" and neural processing delays—as a practical tool for bot detection.