‘Two plus two makes four.’

This is the precise term that we all know without a doubt.

‘Tow plus two makes five.’ 

The above sentence makes you feel confused and raises a question about the number ‘five’. How it can be ‘five’, not ‘four’?

This well-known phrase comes from the chapter of ‘1994’ by George Orwell.

In Nineteen Eighty-Four, Orwell writes:

In the end the Party would announce that two and two made five, and you would have to believe it. It was inevitable that they should make that claim sooner or later: the logic of their position demanded it. Not merely the validity of experience, but the very existence of external reality, was tacitly denied by their philosophy. The heresy of heresies was common sense. And what was terrifying was not that they would kill you for thinking otherwise, but that they might be right. For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable – what then?

George Orwell might be influenced by the Soviet Union poster that created in 1931 for the economic development campaign.

2+2=5: Soviet propaganda poster by Yakov Guminer, 1931