Why can foreign exchange margin trading go long and short?

complex theory

1. For example, long EUR/USD in Europe and America

Buy up the euro buy down the dollar

Optimistic about the EU's economic growth and bearish on the US economy;

2. Take the same example of shorting EUR/USD in Europe and America

Buy down the euro and buy up the dollar

Bearish on the EU economy and bullish on the US economy;

If you understand this problem, you will know why your judgment is always contrary to the data!