Comment by Alix on Harry Potter and the Methods of Rationality discussion thread, part 15, chapter 84 · 2012-04-19T01:28:01.060Z · LW · GW

That depends on how creative you get. Even understrength spells, especially if unexpected, could tip the balance in your direction - especially if all you're looking for is, say, an opportunity to escape. Even if you lose your gun, a rock can still be useful.