In Which We Are Deceived Deception is a tricky business. To trick someone into believing something that is, isn't, or something that isn't, is. It's like magic, but not so nice.
Deceptions come in all sizes.
Some are quite elaborate and are called conspiracies. Conspiracies require more than one person on the deceivers end of the deception, and it helps if you're politician, although it's not a requirement. A conspiracy just means a bunch of people all decide to tell the same lie. Or, in the case of some families, decide not to say anything at all. Some deceptions are so small we call them little, as in little white lies.