QTZ: What are those?
You optimize on past data. The future doesn't repeat exactly the same. Whether your strategy/parameters will be profitable in the future is unknown.

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Hi, I'm new to automated trading and all these coding stuff.
I just learned about parameter optimization.
For a long time I've been dreaming of some function like this, and today I just learned MT5 has it built in it.
As I think, this is just an ultimate tool.
So because not everyone is already rich, there must be problems associated with it and its outcomes.
What are those?
Thank you very much.