So, you heft up the big can and pour gas from the big can into the smaller can to use it? How much simpler can it get than to stick the pump into the big can and stick the hose into whatever you want to gas up? Now comes the hard part, you also have to push the "on' switch. By the way, the big heavy 5 gallon can just sits on the ground.Still too much work. A fellow named Franklin played with a kite and years later a fellow named Edison put Franklin's ideas to good use.