衡量、评价人的行为正确与否需要看结果,效果,得出答案。在Foreign exchange transactionsIn buying and selling, the result is displayed on the account immediately after each transaction is completed. The profit or loss of this transaction is clear at a glance. The market provides standard answers. Traders are like students, the entire process of each transaction is an exam. The performance of the assessment will be expressed in terms of profit or loss. That's why there are only winners and losers in the market.