If you expected that the biggest secret you’d keep in life was who actually ate the last chocolate-chip cookie at home, then, unfortunately, you’re very wrong. Odds are that you had to sign some sort of non-disclosure agreement (NDA) at some point in your life. Corporate wants its employees to protect its secrets and needs to guard its profits, and they use legally binding contracts to do so. NDAs are also useful tools to protect the interests of private citizens, as well as businesses that are negotiating with one another.