Let me tell you about the time a Google experiment saved my ass.
For those of you who don’t know, Google Analytics has an A/B testing feature. You can create multiple variants of a web page and then setup an experiment where Google Analytics directs your traffic to the different versions of your page. Google records how your visitors respond to the difference on some dimension that’s important to you like signups for your email list or purchases from your website. Google takes care of all the mechanics and statistics and tells you the winning variant or that it was too close to call.
Anyway, back to the story.