Yeah, those questions are addressed by philosophy. Philosophical ideas aren't true or false. They are good or bad. Scientific theories themselves aren't subject to proof. A successful theory explains the full set of relevant facts and "proven" hypotheses in the simplest way. Facts don't need proof. They just are. Technically a scientific hypothesis can not be proven. Hypotheses are tested by the scientific community in an attempt to disprove them. If a hypothesis survives long enough without being disproved then it is accepted by the scientific community as correct. Btw, "God created the world" can not be a scientific theory because it is not an explanation. An explanation is a model of how something works. Not the name of who made it.