qotd 2

I learned to distrust all physical concepts as the basis for a theory. Instead one should put one’s trust in a mathematical scheme, even if the scheme does not appear at first sight to be connected with physics. One should concentrate on getting interesting mathematics. Now when Heisenberg noticed that, he was really scared. — Continue reading qotd 2

qotd

Far better an approximate answer to the right question, which is often vague, than the exact answer to the wrong question, which can always be made precise. — John Tukey