Objectivity- Undistorted by emotions or personal bias.
What is objective Trading?
Trading in which decisions are taken on pre-decide rules, decisions in objective trading are not decided by Feelings or opinions.
What is subjective trading?
It is discretionary trading, in which one uses his intuitions and Analysis to take trading decisions.
Is one superior to other?
The rules in a mechanical system are going to be decided by you, the plan is going to be made by you,
the positions sizing and all other aspects are going to be made by you.
So your psychology is going to filter the information coming towards you, even in a mechanical system as well as in discretion.
WHATS THE USE OF OBJECTIVITY-
I am a Discretionary - Rule based trader.
So, I take trades based on my analysis, my entries are discretion based, but the exits , position sizing and Risk management rules are pre decided.
WHY USE SUBJECTIVE TRADING?
The biggest benefit that objective trading do is that it makes the chances of you thinking less during the time of taking an execution decision.
As a beginner trader you will not have much experience, and you will inevitably do a lot of mistakes.