Off topic, but I am presented with a Captcha before reading this blog, one which I couldn't solve because apparently I don't know how to identify boats. More s

Off topic, but I am presented with a Captcha before reading this blog, one which I couldn't solve because apparently I don't know how to identify boats. More sites seem to be implementing this nowadays. Is it justified on a blog? Surely we've lost the war if we have to manually verify that readers are genuinely humans.