Have you ever bought something without having seen it? I'm not talking about an online product on Amazon or eBay. I'm talking about something that you purchased and you didn’t see what you were buying. You don't think you have? I'm sure you have. When was the last time you went to the cinema to see a film? I read somewhere that the founders of Hollywood loved the idea that in the movie business customers buy tickets before they've seen the product – the film. Great concept,