[unclebucknasty]

Well, you'd originally asked whether it's the customer or inventor's "fault" and pretty much suggested that it was the inventor's. I was, merely indicating that it can go either way, depending on the scenario.

But, yeah, if you further qualify it by saying that the inventor was trying to sell ferret-poop rockets, then that marks a scenario that's pretty clear-cut.

[794CD01]

It's no further than my initial statement, it was just clarifying how your quote applied to the situation. The inventor is the one at fault if they envision a product people don't want. That's all. Maybe you can blame their marketing team too.