Stuff like instant messages and tweets are things that 20 years ago we thought or said, but are now recorded and made part of the public record. Back then I mi

Stuff like instant messages and tweets are things that 20 years ago we thought or said, but are now recorded and made part of the public record. Back then I might have called your landline, gotten no answer, and decided to call back later to have a conversation. Now I leave voicemail, Google transcribes it and emails/texts it to you. You text me back, I Tweet something funny you said, then we both meet at Starbucks and Foursquare checkin together. We'll post the pictures on Facebook later. Definitely more data recorded and indexed nowadays, but about the same amount of meaningful information as before.