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justified true belief 

A belief is the acceptance of a proposition. A true belief is one that has been examined by the believer and remains a belief. We often accept propositions, only to discover later that we were wrong. Being wrong can be the result of many things: lack of other knowledge that would have caused disbelief; a persuasive argument that you later reject; the proposition was rational-sounding but it was a fallacy.

A rational proposition that is not a fallacy has justification, that is, it is 'justified'. This means the logic is sound and it has a correspondence to facts of reality. (See 'correspondence truth').

Therefore, a 'justified true belief' is one that has been shown to be logically sound, or is accepted as logically sound.

It may or may not be 'defeasible', in other words, defeatable, by a better argument. The Copernican Revolution was the defeat of Catholic justified true belief, by the arguments of Galileo who used the mathematics of Copernicus. (See 'defeator arguments' or 'defeasors')
President Kennedy had a justified true belief that we could get to the moon, because he was shown the proof, without which his belief could not have been justified.
justified true belief by ceclark February 9, 2012

justifiction 

(just i FIC shun): a fictional justification for a project or purchase that is otherwise patently obvious and necessary, but that nevertheless requires that bureaucratic management procedures and forms be followed.
I had to fill out three forms and write a justifiction to order a replacement for the broken garbage can in the lunchroom.
justifiction by RobScott January 4, 2009
Jussify

Any act, series of acts, or combination of acts used to validate oneself; or attempt to validate or make a point, through fabricated, contrived, or otherwise artificial means. To self-injure, or purposely be injured, by oneself or others with intent to blame a third party for fame, reward, and/or political motivation.
That idiot completely jussified that situation because he couldn’t get what he wanted by working hard and staying honest.

Milli Vanilli are the poster children for celebrities who Jussify themselves rather than becoming performers with integrity.
Jussify by Loose Mortar February 21, 2019

Justifer 

A very manly person, is smart and may be known as a gangster. He has it all. He attracts many of the opposite gender but is never seen partnering up with the same.
"Oh damn dude your becoming a Justifer!"
"That dude is such a Justifer"
Justifer by James Chillenbrak March 31, 2020

junkie justification 

Junkie justification is used by people addicied to drugs who try and justify that the drugs are good and ok in moderation
Dude what are u doing smoking the crack pipe?

Its ok dude its good to have in moderation. Boom junkie justification.

Justifying Bullshit 

When someone tries to make something wrong right, in order to make them better. In the ways of relationships etc.
John: I miss you, we were such a great couple!
Sara: I'm sorry our breakup was for the best.
John: Why are you always JUSTIFYING BULLSHIT?!