Although that's not a good example, I agree that there are cases where you need some "inside knowledge" from the group you're targeting. By products I don't mea

Although that's not a good example, I agree that there are cases where you need some "inside knowledge" from the group you're targeting. By products I don't mean only software. It could be a social project, or anything else where culture is significantly important and not being intimately familiar with it could endanger the success of the project.