The thing is though that it is not atheists who are making any claims or have a belief system in which to work, certainly not in the theistic sense. We simply ask those who make specific claims that they provide evidence to support them. We also ask that this evidence be logical, falsifiable and testable.
It's not really a question of two different sets of peoples with two different belief systems and sets of claims that are otherwise just as plausible as each other, such as, for example, Christians and Muslims.
With atheists you are dealing with the default position. A position where any claims made are usually backed up with evidence or theories based on the known workings of the Cosmos.
If anyone actually makes a claim concerning a specific proposition then you are quite at liberty to ask them to substantiate that claim. However it is my observation that most atheists make no such claims when it comes to subjects that, by their very nature, can yield no or insufficient evidence.
We simply ask the proponent of that claim to provide an explanation for it.
It's not really a question of two different sets of peoples with two different belief systems and sets of claims that are otherwise just as plausible as each other, such as, for example, Christians and Muslims.
With atheists you are dealing with the default position. A position where any claims made are usually backed up with evidence or theories based on the known workings of the Cosmos.
If anyone actually makes a claim concerning a specific proposition then you are quite at liberty to ask them to substantiate that claim. However it is my observation that most atheists make no such claims when it comes to subjects that, by their very nature, can yield no or insufficient evidence.
We simply ask the proponent of that claim to provide an explanation for it.