In addition to the tech it publicly releases, Apple invests in some pretty wacky technology most people never even hear about.

One example? The half-gallon of synthetic sweat Cupertino pumps out every single day to see how well its products withstand the day-to-day rigors of real-world use. Yes, really!

Miroslav Tichy roamed the streets of his Czech Republic town with a camera made of plywood, a cardboard tube and a plexiglass lens he polished with toothpaste and cigarette ashes. His crude, distorted photographs now hang in museums around the world.

So don’t worry if the camera on that iPhone 7 you just purchased doesn’t score high in some laboratory test that pits its image quality against other cameras.