What is a good trading system?

A good trading system is a system that gives good results on a regular basis. But the problem with trading systems is that it's difficult to make a system that has a high rate of return on a constant basis. Some times the markets trade in a way that makes it difficult to profit and thus a system could show losses. But a trading system that includes all the basic parts and has been tested, should work well. But the system will never be better than the person using it.