Do religions evolve?
Have religious belief systems evolved over time?
While many religious believers do not accept the theory of evolution in regards to the development of life, from a historical perspective it seems religious and spiritual belief systems themselves have evolved and developed over time.
From the earliest Venus figurines, cave paintings, early burial sites, naturel and ancestor spirits, polytheistic beliefs to the monotheistic, to deist and others.
Do the strongest survive? Do they adapt? Do they interbreed and influence each other? Do they go extinct? Is there some natural selection process that passes on religious ideas memes, and sees others become extinct?
What properties help a religion survive and thrive? Invisible gods perhaps. Evangelical rather than hereditary. Religions linked to economically and militarily strong cultures perhaps. Do religions have a symbiotic relationship with their host cultures - making them stronger and more united supporting development and progress and hence protecting the religion itself.
What are the greatest challenges to the survival of different religions today, and what will help them survive and thrive?