As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality – Albert Einstein

I know I’ve posted a lot of quotes of Albert Einstein, but I wanted to add this now, because it relates to reality more than many others. Many pupils have asked their teachers, ‘What can I use this for in reality?’, and just as often this has been asked, it haven’t been answered, which is why Einstein is correct. If a mathematic law is absolutely certain, it won’t refer to reality, but to the world of theoritic mathematics.