Neil DeGrasse Tyson on Disproving God

[Nonpareil]

I am also willing to make the claim, based on a complete lack of evidence, that there is no god. At least not a christian god.

This is for all, but the last sentence I put in bold above is important. 

This is because in this conversation, claims are being made and so they have a burden of proof that goes along with them.  This is something that neo-scolastic has been trying to point out in a number of places recently, and is opposed to the other thread defining atheism as a mere lack of belief.

I think that it is important to acknowledge going forward here, that claims are being made, and that claiming evidence of absence is a position that needs to be supported.

Quite right.

It just happens that it is supported, because absence of evidence is evidence of absence when the absence is present where the evidence should be.

If someone claims that there is an elephant in my living room, and I go look, and find nothing, then I have evidence that there is no elephant in my living room.

If someone tells me that a deity exists that flooded the world, parted the Red Sea, brought down the walls of Jericho at a certain period in history, and so on, and we go and check and find nothing, then we have evidence that said deity does not exist.