“Since their inception, financial markets, and to a lesser extent some real markets, have been subject to bubbles.
More recently, stock prices, but also credit, real estate, commodities, bond markets, and famously, bitcoin, are all assets that have experienced bubble episodes. Regarding cryptocurrencies, many economists also defend a permanent bubble, their fundamental value being theoretically non-existent.”
In fact, the presence of bubbles in the markets (financial and real) seems to stem from the persistent behavior of economic agents. Experimental studies, controlling exactly the actual value, showed that participants tended to set up a bubble-like operation, with price surges and collapses very similar to real economy situations, and in no way related to a change in the market.