How to argue this point?

[Fidel_Castronaut]

He's claiming to know what you believe/think and then demolishing it (or attempting to demolish it) with a 'gotcha' (you believe x & y which is just as unevidenced as what I believe! YOU CAN'T EXPLAIN THAT! GOTCHA!). It's silly because, if we're really going to get into it, being an atheist doesn't entail being limited on anything regarding beliefs on origin and the cosmos, just that one lacks a belief in a deity or deities.

A strawman is inventing the position of an opponent in a debate (or wherever) and then presenting an argument or evidence that counters or rebukes it. the person doing this is arguing with themselves and not their opponent.

http://en.wikipedia.org/wiki/Straw_man

re: Claim. Seems your friend has fallen victim to an interwebz hoax:

http://www.snopes.com/media/notnews/miraclewitness.asp

Enjoy watching him try and argue out of that one.

Right, thinkI've argued by proxy for you enough now Perhaps invite him here if he's willing to debate, else enjoy the forums. There's a lot of info and debate on here so you'll pick a lot of things up you can use yourself in the future.