Manual trading in the Forex market is like hunting of foxes with bare hands. As the fox was too fast for the human hands and forex markets are too fast for the human mind. Commercial systems are working 24 hours a day, five days a week. They can perform commercial activities within 10 milliseconds. They are not affected by mood, not suffer, do not sleep, do not smoke cigarettes and have lunch. The most important advantage is that you can check their activity historically, while manual trading this is impossible. Forex expert advisors for Metatrader 4