Let’s consider this scenario:
You have a house. You often hire people to clean, maintain, fix, and improve that house. Every person you hire needs access to the house. But it’s inconvenient to let them in every single day, maybe even multiple times a day.
- So you give them all a key to the same lock, to let themselves in and out.
- When a project is done, you sometimes ask for the key back, but sometimes you don’t.
- And you should replace all the locks in the house when you do but that’s time consuming.
- It’d be annoying to have to hand out new keys to everyone anyway.
All those people using the same key. A key that isn’t changed and often isn’t taken back. You wouldn’t want to expose your home, and everything you keep inside it, and even your personal safety, to that kind of risk.