Originally Posted by LogicIsYourFriend
I don't really see the difference between non-falsifiable and non-verifiable. I suppose falsifiable means that if it were false it could be shown false, and verifiable means that if it were true it can be shown true. They are practically the same thing in terms of testability and observability, and I'm tempted to say that if something is (non)-falsifiable then it is also (non)-verifiable.
Falsifiability is the logical concept that, through direct observation or physical experiment, a concept can be shown to be false. It doesn't mean that it is
false, but that if it is, such can be shown through observation or experiment.
Thus, in scientific circles (and in keeping with the forum's subject), the existance of God is unfalsifiable -- God's trancsendental abilities are independant of the physical world, and no amount of experimentation can prove or disprove the assertion.
In most cases, Logic, you're quite correct -- something that is unfalsifiable is usually unverifiable by nature. The Wikipedia article on falsifiability gives an example: 'All men are mortal' is unfalsifiable because it's impossible to verify that all men are
mortal through any amount of experimentation or observation. 'All men are immortal', however, is eminently falsifiable, since all we need is a single example of a dead human.