What does "fit" mean in "intersubjective fit"?

Does "fit" here refer to "the manner in which something fits"?

Context:

The subjective world is situated in an intersubjective space, a cultural space... without this cultural background... I wouldn't have the tools to interpret my own thoughts to myself. So here the validity claim is not so much objective propositional truth, or subjective truthfulness, but intersubjective fit. This cultural background provides the common context against which my own interior thoughts and beliefs will have some sort of meaning, and so the validity criteria here involves the "cultural fit" [of a statement] within this background... What is so remarkable about common understanding is not that I can take a simple word like "dog" and point to a real dog and say "I mean that." What is so remarkable is that you know what I mean by that. [So it is] a matter of how we arrange collectively, our ethics, morals, laws, culture, group or collective identities, background contexts..."[29]

More:
http://en.wikipedia.org/wiki/Ken_Wilber#Theory_of_truth