Why destroy Laketown's bridge?

[The Sixth Wizard]

By the fire being "self renewing" I meant self renewing inside the (living) dragon.

Ah my mistake.

Actually I was always at a loss as to how Smaug kept those jewels on him... obviously they are his most prized ones or the most hard, so he wouldn't want them to fall off. I always thought they kind of "stuck on", as though he had lain on them for so long they just stick, like say, when you breathe on a spoon and stick it to your nose..

Dragon anatomy ... now THAT would be a cool topic.