Ziddina, we see things from different perspectives. You see evolution in Christianity. I see evolution in reverse. All the break-away groups did not improve the situation. See word "schism," and "schismatic": a division, separation into mutually opposed or hostile parties. I see a similar process in language development, evolution in reverse, with complex languages being simplified all the time, e.g., English and Hebrew.
Natural Immunity: You see it as self-improvement, evolution in action. I see it as pre-programmed. Yes, some people have built up resistance against sleeping sickness. If not the whole lot, living in endemic areas, would have been dead.
Cofty, I see "spirituality" as being in tune with God (his way of thinking). Some people are, some people are not.