As you have somewhat stated, I guess the proof is in the puddin'. When you see what the Lord can do for others as well as for yourself as in changing your outlook on life, your attitude, and all that's included, I'm afraid it's something that science can't explain. It's more than just a self-improvement course. It's when a frail human admits that he doesn't have the power in himself to deal with his sinful nature and needs help from a higher power. These things can't be explained by mere science. There, now I can get off my soapbox.