Wild Black Swan Stock Photo

Before the discovery of the Australian black swan, the 17th century before the Europeans think the swans are white. But with the appearance of the first black swan, this unshakable belief collapsed. The presence of the Black Swan implies an unpredictable major and rare event, which is unexpected, but it changes everything. Humans are always overconfident, and do not know the appearance of a black swan is enough to subvert everything. However, both in the stock market expectations, or government decisions, or ordinary people in the daily simple choice, the black swans are unpredictable