Accelerated life testing is a type of experiment used to measure how long something will last. It's like playing a fast-forward version of a game, so you can make a prediction about how long it would take to finish the game in real time. In an accelerated life test, scientists use a machine to make a product work faster than it usually does, like turning up the volume on a music player. In this way, they can learn how long the product will hold up with all that extra stress. It's like riding a roller coaster over and over again in a shorter amount of time to figure out how long a roller coaster will last.