What is your epistemology?

[Tiberius]

Actually theVOID, it is you who is confusing things here. Plato said knowledge was "true justified belief", however there is debate over whether this is enough of a description. Indeed, there are examples where Plato's knowledge is called into question. See Gettier problem.

In philosophy knowledge is a true justified belief - That being, I can be said to "know" P if P and I am justified in believing that P.

Actually, no. You have the belief, you have the justification, but you miss out "true" for some reason. You can only be said to "know" P if you are justified in believing in P, and P is true. I have no quarrels with the justification of some beliefs; I do have problems with whether we can "know" these things as true.

To a degree of absolute certainty that is true, however having a TJB requires no such certainty.

No, but it does require "truth". You seem to be making the very common mistake of missing that part out. Having the justified belief be "true" is very important, as without it, you could make claims of knowledge that are simply not true, even if they are perfectly justified.

Perhaps you thought that the "true" in TJB meant "honest"? If so, look over it again. Wikipedia has some helpful pages on it.

From Justified true belief:

Justified true belief is one definition of knowledge that states for someone to have knowledge of something, it must be true, it must be believed to be true, and the belief must be justified. In more formal terms, a subject S knows that a proposition P is true if, and only if:

- P is true
- S believes that P is true, and
- S is justified in believing that P is true

The justified true belief theory of knowledge suffered a significant setback with the discovery of Gettier problems, situations in which the above conditions were met but that many philosophers disagree that anything is known. Robert Nozick suggested a clarification of "justification" which he believed eliminates the problem: the justification has to be such that were the justification false, the knowledge would be false.

Would you say that you cannot 'know' the effects of gravity? It seems ridiculous to put acceptance of something like Gravity down to a probability... The probability of an object falling towards the most prevalent gravitational object provided that there is no competing force (such as magnetism if the object is metallic) is 1 - This leaves no room for doubt and is "knowledge".

It may seem ridiculous to you, but as far as I am concerned, in an absolute sense, we cannot know that "gravity" exists. It doesn't matter how likely something is of being true; if there is an alternative explanation, however bizarre or unsettling that might be, we cannot say that "gravity is known truth". Whether through the Last Thursday example, or through delusions of our own minds, I believe it is impossible to "know" these things in any absolute way. As such, they remain very justified beliefs, but beliefs nonetheless.