Magic and science have an odd place in Arda, entangled and inseparable for now (and later on, because Eru Iluvater's spirit really is at the centre of everything). The general rule is don't use either for evil purposes, and you should be fine. Not that anyone other than elves or Maiar could really use magic without some dreadful trade-off. And even then.

Boromir eyes the mark on the back of the door. "I remember it." He makes a sound that is caught between a loud exhale and a weary sigh, before voicing the obvious. "This doesn't bode well."