Deception is the act of convincing another to believe information that is not true.Deception involves concepts like propaganda, distraction and concealment. Fiction, while sometimes manipulative, is not a deception unless it is portrayed as the whole truth; not to be confused with half-truths.In many cases it is difficult to distinguish deception from providing unintentionally wrong information. One of the reasons for this is that a person or an entire organization may be self-deceived.
Dissimulation consists of concealing the truth, or in the case of half-truths, concealing parts of the truth, like inconvenient or secret information. There are three dissimulation techniques: camouflage (blend into the background), disguise appearance (altering the model) and dazzle (obfuscate the model).
thumb|100px|right|This wallaby has adaptive colouration which allows it to blend with its environmentThe camouflage of a physical object often works by breaking up th