Warning: Undefined array key "visitor_referer_type" in /var/www/vhosts/wordinf.com/core/app/libraries/Core.php on line 98 Tim Harford - In certain businesses, I would say 10...
In certain businesses, I would say 10 failures to one success is a perfectly acceptable ratio. Because the failures die pretty quickly, they're not that expensive, and the successes can be really huge.