Regards esteemed friend @honarparvar.
If we apply these theories of David Chambers and Elroy Dimson to the graph you are offering us, then we can notice that the Burbúja phenomenon is not present. At least as far as the "fall" is concerned, although it is somewhat close to the "boom."
The digital bubbles that we have experienced (.com) were characterized by an abrupt growth but without real support of the products offered. It was simply enough to place the word "internet" or ".com" in the name of any project so that it could capture large sums from investors.
In today's market, investors have matured in their knowledge. And with the losses experienced during the ICO's boom, investments are now made with greater market research.
Your friend, Juan
RE: Stock market bubble and crisis definition and today's analysis