I wasn't talking about Minecraft, necessarily. But consider, for example, Zynga, or any of the makers of pay-to-play games that are designed with a thorough und

I wasn't talking about Minecraft, necessarily. But consider, for example, Zynga, or any of the makers of pay-to-play games that are designed with a thorough understanding of addiction psychology in mind. You didn't design the mechanism, but you know what it does. Are your hands clean if you write that code?