Currency speculation is considered a highly suspect activity in many countries. While investment in traditional financial instruments like bonds or stocks often is considered to contribute positively to economic growth by providing capital, currency speculation does not, according to this view; it is simply gambling, that often interferes with economic policy.

The technical approach concentrates on prices, which neutralizes external factors. Pure technical analysis is based on objective tools (charts, tables) while disregarding emotions and other factors.

In 1967, a Chicago bank refused to make a loan in pound sterling to a college professor by the name of Milton Friedman, because he had intended to use the funds to short the British currency. The bank's refusal to grant the loan was due to the Bretton-Woods Agreement.