灵活的机械交易与自主交易 (Flexible Mechanical Trading vs. Discreti)

Let me define a couple of phrases before moving forward. These are my relatively new perception of these phrases. Please correct me if I'm mistaken:

Mechanical Trading: You have a system in place and you are always committed to trade based on that system. So if there is a trade opportunity based on that system you enter the market immediately. You exit the market only if the system tells you to do so.

Discretional Trading: You may or may not use a trading system but even if you use a trading system you may enter or exit the market at your own discretion. For example if you enter the market and it moves against you even if the system tells you not to exit, you do exit to avoid further losses.

The altimate mechanical system is the one that is handled by your computer rather than you so you won't interfere with the system decisions.

I hear from many people that "discretional trading" might be useful in short term but in long term it is the mechanical trader who wins. However, discretional trades argue that market is a dynamic entity and no system can last forever. That's why you need your own discretion to decide what to do.

Based on all those arguments I was thinking what if we could have a flexible mechanical trading system in place. In my opinion such system uses sophisticated trading tools to recognize points of entry and exit for each trade and applies money management tools to maximize profit and limit losses. It's somewhat similar to discretion trading in a sense but the flexibility is an inheritance of the system rather than the decision of the user of the system.

By accepting this idea you can actually develop an automated mechanical system than envisions the market movements but when it enters the market it decides what to do if the price moves either in its direction or against it. It won't replicate the human mind for sure but on the other hand the element of human feelings is eliminated.

What are your ideas?