You know, that reminds me of an old salesman's story.
Young kid starts working as an appliance salesman with an old timer who has been selling for decades. On his first day the kid ropes in a female customer who is shopping for a refrigerator. He talks up the refrigerator, touting all its features and finally says, "The freezer even defrosts automatically!"
The woman asks him, "How does that work?" The kid launches into a tedious explanation about temperature, relative humidity and Freon gas and the woman's eyes glaze over and she leaves the store without a refrigerator.
The kid flops down on a chair next to the old timer, saying he can't figure out why he didn't close the sale. The old timer smiles and says, "Kid, selling this stuff is easy. Tell them whatever you have to tell them to close the deal, and if they ask how something works just say, 'it does it at night while you're asleep.'"