Mirrors.

Mirrors are used for alot of things. For seeing if we look good or being reminded of our insecurities. For practicing speeches or comparing ourselves to other people. So yes, mirrors can be a good or bad thing. So why not use a person? Here's why. Replacing humans with mirrors isn't a good idea. For instance , if you had to tell a human all your secrets sooner or later more people will know about them. Or asking a human if you look good. One, they'll lie , Two, they'll tell the truth. But you never know when someone's lying or not , unless they're extremely bad at it. Extremely bad. But then again. Humans and mirrors have one thing on common. They both break at a certain point. It's pretty hard to fix a broken mirror. This isn't about mirrors.