The quantity of new assets created at any given period is, inevitably, negligible compared to the stock of the same class of assets accumulated over decades and, sometimes, centuries. This is why the prices of assets are not anchored - they are only loosely connected to their production costs or even to their replacement value. Asset bubbles are not the exclusive domain of stock exchanges and shares. "Real" assets include land and the property built on it, machinery, and other tangibles. "Financial" assets include anything that stores value and can serve as means of exchange - from cash to securities. Even tulip bulbs will do. In 1634, in what later came to be known as "tulipmania", tulip bulbs were traded in a special marketplace in Amsterdam, the scene of a rabid speculative frenzy. Some rare black tulip bulbs changed hands for the price of a big mansion house. For four feverish years it seemed like the craze would last forever. But the bubble burst in 1637. In a matter of a few days, the price of tulip bulbs was slashed by 96%! Uniquely, tulipmania was not an organized scam with an identifiable group of movers and shakers, which controlled and directed it. Nor has anyone made explicit promises to investors regarding guaranteed future profits. The hysteria was evenly distributed and fed on itself. Subsequent investment fiddles were different, though. Modern dodges entangle a large number of victims. Their size and all-pervasiveness sometimes threaten the national economy and the very fabric of society and incur grave political and social costs. There are two types of bubbles. Asset bubbles of the first type are run or fanned by financial intermediaries such as banks or brokerage houses. They consist of "pumping" the price of an asset or an asset class. The assets concerned can be shares, currencies, other securities and financial instruments - or even savings accounts. To promise unearthly yields on one's savings is to artificially inflate the "price", or the "value" of one's savings account. More than one fifth of the population of 1983 Israel were involved in a banking scandal of Albanian proportions. It was a classic pyramid scheme. All the banks, bar one, promised to gullible investors ever increasing returns on the banks' own publicly-traded shares. These explicit and incredible promises were included in prospectuses of the banks' public offerings and won the implicit acquiescence and collaboration of successive Israeli governments. The banks used deposits, their capital, retained earnings and funds illegally borrowed through shady offshore subsidiaries to try to keep their impossible and unhealthy promises. Everyone knew what was going on and everyone was involved. It lasted 7 years. The prices of some shares increased by 1-2 percent daily.