If we found an elegant theory that managed to unify, explain and fit all experimental knowledge of the observable universe, … But it broke down with singularit

If we found an elegant theory that managed to unify, explain and fit all experimental knowledge of the observable universe, … But it broke down with singularities, violated symmetries, required special arbitrary numbers, didn’t conserve information, etc, … Unless the universe was infinite, … Then with great respect for Occam’s Razor, we could dispense with those unnecessary complications, and safely assume the universe was infinite, … Until we saw the back of our heads! Occams’s Razor is the scientific principle that lets you accept a seemingly perfect theory without forever watching (for) your back. O_o It’s the final back stop.