This is in a response to a closed thread, to which I could not contribute. The contribution is here now though. https://www.physicsforums.com/showthread.php?s=&threadid=12080 I'm supposed to keep religion to a minimum, but the basic argument in this thread was god may not be god as there may be a slight chance that he is actually a brain in a jar or whatever infinite unprovable other scenarios you can think of. The reasonning of the atheist implies that he believes that nothing is for certain. On it's own this reasonning is extremely illogical as if you were to pick up a ball and drop it 20 times you would expect that on the 21st drop that there is an element of certainty that the ball would drop. This is where scientific method comes in. Indeed there are infinite scenarios that could be being played out that there is no evidence to prove, but these can all be considerred lunacy as there is no evidence to prove them. Is nothing for certain? Yes, nothing is for certain. As nothing is 100% uncertain. It is better (logical) to see things in terms of probability instead of certainty and non-certainty, due to the fact that scientific method can be applied. For example There is a near certain (though not 100% certain) chance that when i let go of a ball it will be attracted to the ground by the force of gravity. When I take a card randomly out of a pack of cards there is a 1 in 54 chance of me taking out the ace of spades. There is a near impossible chance of me taking out an off duty slovakian security guard and a near certain chance of me taking out a card. This of course assuming I have just searched through the cards and made sure all the cards are there etc. Though somone is probably going to disagree with my idea of probabilities as a link between scientific method and the statement that 'nothing is for certain'. There is also the following logical problem. 'Nothing is for certain' If the above statement is not for certain, then there is a possiblity that something or everything is for certain and so the statement 'nothing is for certain' cannot apply. 'Nothing is for certain, except this statement.' Which people tend to disagree with, though I have never had a detailed explanation as to why. I could go on to blabber about how scientific method applies to the conscious self and why aristotle's early version of scientific method was flawed, though that is off topic and even more basic, so it would be lame to do so.