john: okay so, general relativity and quantum mechanics conflict?
jeff: GR and QFT don't just conflict, they're incommensurable.
john: whoooah
john: awesome.
jeff: yeah, it's great stuff.
john: and what about newtonian physics
jeff: newtonian physics is a limiting case of both theories.
jeff: not every period in history has such successful incommensurate theories at the same time, so live it up.