Poka-Yoke
Poka-Yoke is a Japanese phrase meaning mistake proofing.Poka-Yoke is meant to shape behavior at the level of execution. There are two approaches to this. One is to prevent humans from making a mistake, to physically prevent it. If it’s not possible to prevent the mistake, you can use poka-yoke to anticipate and warn of mistakes.For Example: Here is a set of electrical connections. Although their are majorly 3 Power lines (Live, GND, Neutral) but still to avoid wrong connections of modules and parts of electronics we use different connectors, having different shapes and sizes to prevent human errors.
Heemanshu Raj