Do you consider yourself to be a science buff? If you do, then you’ll know that science doesn’t involve proving what works. It involves proving what doesn’t work. Known as the scientific method, we use it everyday. You start with a question like, “Will drinking milk make me sick?” Well, there’s only one way to find out. We create a hypothesis and test it. Did it make you sick? Let’s test another kind of milk. Scientists do this all the time. Some questions, however, are still elusive. Either they can’t be tested (metaphysical), or more testing needs to be done. These are 6 Simple Questions Science Still Can’t Answer.