How do you break an opinion? I could fathom changing an opinion, but breaking an opinion eludes my imagination. I wold say the hardest thing to break, would be the universal speed limit. Other than that everything is possible. Gravity? To an extent I suppose but never entirely. Gravity is a function of MASS and DENSITY. Tweak either and you can ALTER Gravity. I mean, say we remove the Sun...what happens to our Solar System? Well, it'll slowly get pulled towards the next largest Gravity well. Time? Time is a location that is function of speed and gravity. Alter either, and TIME changes or even breaks (so to speak). Hence why we can't see inside a black hole as LIGHT can't escape the GRAVITY well. That said, time is also relative to you compared with those not moving as fast. So it's possible for time to seem broken for others, but not you, should you be within the event horizon of a gravity well. As for the Atheist's opinion. Hmmm....do you agree that there's no such thing as 100% As in the 100% is an imaginary construct, similar to NOTHING or Zero? If so, how can you be 100% sure about anything unless you know, 100% of everything? Put differently, Why does GOD you don't believe exists NEED to be sentient? Based on the human view of God, why can't God be, Gravity? Completely unconcerned and unaware, but the creator of all, nevertheless?