I am not sure about all of hard science either but in case I want to test that reality I jump into my car and drive, I turn on my computer and make something, i make a phone call through a satellite. All that engineering is based on hard science whether that is physics or math.

When it comes to "hard sciences" that deal with lets say most of medicine, astronomy and the like, then yes, I am not so sure either. They suffer from the same shortcomings as soft sciences do.