Why isn't everyone rich already?


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.

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.