oh, to know.
I used to be really superstitious. In high school I wouldn't blow out candles because I believed that if you blew them out, you were blowing out someone's life. So I'd only snuff them. I wouldn't walk under ladders or open umbrellas in the house, I kept garlic and salt in my pockets, I left bowls of milk by the back door for the brownies so they wouldn't wreak havoc on the home, I crossed my fingers in the dark to ward off evil spirits. Some of them I still do but most of my superstitions have passed; I'm not sure I believe in luck anymore, bad or good. We make our own luck by being proactive about where life takes us, by being consciously aware of all our decisions.
What would the world be like if every person could read every other person's mind? If we all knew what everyone was thinking all the time? Would we begin to lie even in our thoughts, or would it encourage humanity to be more honest? Would it make us hate each other less out of greater understanding or would we hate each other more for having prejudiced thoughts? What if it were only for one day - would it create violent war or a day of complete peace and apology?
What would humanity do with that much personal information?