My original analogy was flawed. And yes, I pulled the reference out of my ass. The actual objects referenced are arbitrary. Let me try again. Replacing a low e

My original analogy was flawed. And yes, I pulled the reference out of my ass. The actual objects referenced are arbitrary. Let me try again. Replacing a low efficiency device with a medium efficiency device is better for the environment (and more cost effective) than replacing a high efficiency device with an ultra high efficiency device.