You're applying logic to dogma. I hope you understand your error at this point, but as to exactly what's wrong:
... every group of every monotheistic religion says and believes they're the only "true" group, their group is the only valid group, and the entirety of that religion. Islamic dogma states very clearly, and every muslim will repeat it, that there is "only one islam".
This despite the fact that what you say is correct. There's 100s, minimum, of different versions of islam.
Your idea, that history is clear proof to the contrary ... well history is clear proof that there is no god and therefore no valid religion. In the case of islam, one might point out that the central promise of islam as a religion is that muslims will win militarily, because god will intervene directly (but "of course" what is currently happening in Iran proves they are wrong and every other group of muslims is right - this is the sort of argument you're up against). The fact that any caliphate fell at all is a pretty damn obvious contradiction to the entire religion.
Frankly, I must say, I like the "goal" of Christians and Jews a whole lot better.
Propelloni
I'm not going to argue, because I think you are right. It's still fun to think rigorously about some random statement ;)
... every group of every monotheistic religion says and believes they're the only "true" group, their group is the only valid group, and the entirety of that religion. Islamic dogma states very clearly, and every muslim will repeat it, that there is "only one islam".
This despite the fact that what you say is correct. There's 100s, minimum, of different versions of islam.
Your idea, that history is clear proof to the contrary ... well history is clear proof that there is no god and therefore no valid religion. In the case of islam, one might point out that the central promise of islam as a religion is that muslims will win militarily, because god will intervene directly (but "of course" what is currently happening in Iran proves they are wrong and every other group of muslims is right - this is the sort of argument you're up against). The fact that any caliphate fell at all is a pretty damn obvious contradiction to the entire religion.
Frankly, I must say, I like the "goal" of Christians and Jews a whole lot better.