Economic bubble?
An economic bubble (sometimes referred to as a speculative bubble,a market bubble,a price bubble,a financial bubble,a speculative mania or a balloon) is “trade in high volumes at prices that are considerably at variance with intrinsic values”.
but according to the principle of demand and supply
if there is no supply,then there is no demand
and if there is no demand,then there is no supply
so if a bubble formed,the price is going high,then there must have a demand increase,isn't?