“We have a variety of different kidneys for you to choose from,” the salesman said, pushing a few buttons on his tablet, causing the available catalogue of the organ in question to be projected on to the wall.
“The base model has the most tolerance for variation. You won’t get a bad kidney. But just like in nature, each one works a bit differently. The more expensive models have a certain amount of customization available. For example, if you like to eat a lot of salty foods, you can get a kidney especially good at maintaining salt and water balance.”