As you might know, I grew up in a mental institution. Yep, it explains a lot of things. Anyway, my parents were both shrinks and it was convenient for them. It was great for me too, because I learned to see things a bit differently.
Who was crazy back then?
Think about it. It was a person who talks to himself in the middle of the road, like she is having a conversation with an imaginary other person.
What about now?
You still have people walking down the street and talking loudly to themselves. The difference is that they are actually talking to a real person. They have a Bluetooth headset you cannot even see, and they talk loudly. Nobody around them cares about what they are saying, everyone around is just annoyed.
We moved from reacting to crazy people with a smile, to being annoyed. Sad.
What is going to happen next?
Well, Apple just announced Siri. It is a personal assistant for the iPhone. You tell her things like "remember to call my wife when I leave work" or "please wake me up tomorrow at 8 am" or "how do I get home?". She replies with the perfect answer, assuming you do not have an accent (I am eager to try it, of course ;-)
The next crazy person is going to be someone in the middle of the road, yelling to a phone. Not having a conversation with someone else, real or virtual. Yelling to a little piece of plastic. Swearing like a sailor "F***ing Siri!! Do you understand what I am saying??". Not even a Bluetooth headset in sight.
The evolution of crazy. No way to tell them apart.