Imagine a world where you can't feel safe speaking to those you're closest to because an invisible eavesdropper is always lurking, ready to expose your private words to public scrutiny. Actually, we already live in that world, especially if you're a public figure or talking to one, as WikiLeaks has shown by its steady release of hacked emails during the presidential campaign.
During the primary race, it published emails of Democratic National Committee officials, and this month it has busied itself with broadcasting those of top Democrats working inside Hillary Clinton's campaign. (The most recent, exposing internal discussions of the Clinton Foundation, reveal concerns about appearances but no favors granted to donors - and that campaign chairman John Podesta loves risotto.) Of a different nature was The Washington Post's release of Donald Trump's recorded conversation with Billy Bush during a 2005 taping of an "Access Hollywood" segment. But it, too, was an instance of public exposure of presumed private communication.
We all say things in private that we wouldn't say in public, and when we talk about the same subjects in public, we say things differently. That's why taking words said in private and making them public is practically guaranteed to make the speaker look bad. A Wolof proverb holds, "Everything can be moved from one place to another without being changed, except speech." One reason that's true is the matter of word choice: not only crude language, which some people use in private, but also informality that can come across as callous when overheard. And it's common to talk about people who aren't there to connect with people who are - in ways you never would if the absent people were present.
It's a fundamental of human communication that we speak differently to different people. Imagine if someone recorded you talking to your best friend, your grandfather, your mother, your younger brother, your great-aunt, a new acquaintance at a party and your boss - then pulled out and played side by side the way you described an evening out to these different listeners. There is no person on Earth who would not come out seeming like a hypocrite and, to use the current term of art, a liar. In the past, that could have happened only if someone who heard you speak repeated what you said to another person. With electronic recording and digital communication, the risk that an unintended listener will hear your words (or an unintended viewer will see them) is always there - and has become a staple of politics. Scandals regularly result from remarks, as with Mitt Romney's "47 percent" comment in 2012 or Trump's sexual boasts to Bush.