What is boiling frog effect?

In nineteenth century, Cornell University has conducted a famous experiment known as "frog test." The experiment tried put a frog into a pot of boiling water, the frog was shocked and jumped out immediately from the pot. The frog was safe at the end. Later, the second experiment was put it in a pot of cold water and let the frog swims freely, but another site heated the cold water slowly. Although the frog can feel the outside temperature is changing, because of its inertia caused it not to jump out immediately. Until the juncture when the heat was unbearable, it was too late to save itself.

This is famous philosophy known "boiling frog effect".

In crisis management, the most terrible danger is progressively coming in slowly rather than crisis come in sudden. It is because of the sudden crisis may befall people to mobilize their full potential action and make a variety of responses to get rid of the crisis quickly. Reversely, if the crisis comes in slow and gradual, people always do not feel the crisis is coming, even the crisis may lead to the threshold of death.  (Source: MBA think tank)

The boiling frog effect may also applied in the numismatic collection especially the hot items which you always keep to grab irrationality. You may attracted by the spreading rumours how fast the price hiking of the hot items especially those items which not rare or precious in numismatic bibliography. Eventually, you do not realise that you are staying in a gradually heating water. No matter what collectible items particular the common collectible, please retain your rational and logical sense although its price is keep hiking abnormally like nobody business. It was always driven by speculator. Your greed is always main influence lead you to be prey of “boiling frog effect”.