Well, I think the problem here is that ‘bubble’ has a fairly precise definition that is getting abused in this particular thread.
A financial bubble is when something that is traded (tulip bulbs, stock, houses) experiences an excessive price run-up due to speculation and not underlying fundamentals.
This is different from a ‘boom’, which is based on a strong fundamental demand.
It would seem, however, that most bubbles are simply outgrowths of booming industries.
