Why the squiggly title? The image above is a CAPTCHA. CAPTCHA is an acronym for ‘Completely Automated Public Turing test to tell Computers and Humans Apart’. This was the fruit of studies by Guatemalan tech entrepreneur Luis Von Ahn. Von Ahn has realised a vision of mass collaboration at a global scale. I had the great pleasure of catching up with Luis and getting some insights into his success, which was really a by-product of a truly noble vision.