Conditonal believing

Today I took a bouncy ball and repeatidly bouncied the ball off a wall. I kept this going until I reached the state where I could do it "with my eyes closed". I was then hit with this theory I call "conditional believing". If I were to keep this going(bouncing the ball off the wall), what would happen if the lights were shut off? Would I start to believe that the ball is still there even though I cant see it? Or would the belief that the ball would hit off the same mark cause me to believe that ball will be bounce back in my hand?

The same can be said about religion. Have we been conditioned to believe that God is there when he may not be?