If you are wondering why you should ask people for their opinion about your business, it is because it will save you from doing something stupid like this:
Running in place AND moving. Holy shit. Is that possible?
Hopefully this teaches you that you should always ask other people for their opinion. You don’t have to listen to them, but there is no harm in asking. And even if you decide to continue with a dumb idea, it doesn’t mean you can’t get rich off of it.
Do you know of any other dumb business ideas?
Update: Oh shit! This guy may actually be successful. It seems like his company has many other products that are popular.