Then you're inventing your own term. Bubble is shorthand for the Economics term "speculative bubble" or "economic bubble" and has described the behavior of many markets over the centuries. What collapses is asset prices, not ideas. It's definitional...just ask your friendly neighborhood economist.
Edit: Here, I went and found the origin for you (via wikipedia). The South Seas bubble spawned the term:
"The metaphor indicated that the prices of the stock were inflated and fragile – expanded based on nothing but air, and vulnerable to a sudden burst, as in fact occurred."
Then you're inventing your own term. Bubble is shorthand for the Economics term "speculative bubble" or "economic bubble" and has described the behavior of many markets over the centuries. What collapses is asset prices, not ideas. It's definitional...just ask your friendly neighborhood economist.
Edit: Here, I went and found the origin for you (via wikipedia). The South Seas bubble spawned the term:
"The metaphor indicated that the prices of the stock were inflated and fragile – expanded based on nothing but air, and vulnerable to a sudden burst, as in fact occurred."