Don't believe in any law said by any scientist instead try to find some faults in that law,or try to find some exceptions in the law or see where is this law useful and where it is not. It is not always that the law or theory given by any scientist is correct,these were once hypothesis /assumptions and thus can be wrong or right. Asking questions is what makes our mind work extra which others in the current world are not doing. The summation of these extra thinkings is what makes some people cope with difficulties of life while the others can't although they studied the same amount.

The first step is that act as you have no knowledge about the topic,then understand what the theory or law given is telling us and now start imagining it in real life and now start thinking about other factors which can fail this law. Try to interrelate one law with the other and see if the two laws still holds true . Ask more doubts to teachers and try to extract as much knowledge form the teacher as you can. Go very deep in the topic until you finally reach the atomic or cellular level of that thing. "Learning is not knowing things, learning is having doubts that no one had before "