Huh?!
Why does the primary star of a life-bearing planet need to be in the proximity of other stars!? Why the heck should that primary star and/or the life-bearing planet need "cosmic radiation?!"
(If you're saying that some minimal amount of mutation-inducing radiation is necessary for evolution to take place - and that has NOT been established as a prerequisite - then the primary star, itself, could provide it.)
Regards,
You and I believe the same thing, though I didn't state it clearly. My point is that people who believe that God doesn't exist and that we came to existence through a bunch of freak accidents (including the very planet we live on being here by accident) depend on a bunch of things that have to happen to be just right for the "accident" to happen correctly. One of those things is the presence of substances that our planet and sun were formed from (if it happened accidentally).