Tripartite definition of knowledge

Types of knoweldge

  • Ability knowledge - Knowledge how, i know how to ride a bike
  • Acquaintance knowledge - Knowledge of, I know of my friend Lawrence 
  • Propositional knowledge - Knowledge that, I know that the capital of England is London

When speaking about the definition of knowledge, we are talking specifically on propositional knowledge 

The Tripartite definition of knowledge 

Plato argued that for something to be knoweldge it must be justified, true, belief and that these 3 conditions are necessary for knowledgr 

You cannot know something that isn't true, you caanot know something if you don't believe it and it cannot be knowledge if it is not justified 

Together, these conditions are said to be jointly sufficent as they capture every instance of knowledge whilst not capturing anything that isn't knowledge 

Gettier cases 

Gettier cases describe a scenario where an indiviudal has a justified, true, belief but is not knowledge 

  • Smith and Jones are being interviewed for the same job
  • Smith hears the inverviewer say that 'Jones is getting the job'
  • He also sees Jones count 10 coins from his pocket 
  • From this, he forms the belief that the person who gets the job will have 10 coins in there pocket 
  • Jones does not get the job, Smith does
  • Smith also has 10 coins in his pocket 
  • Theerefore the belief is knowledge 

This shows the tripartite defintion is

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