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I've never mentally dinged someone for saying they don't know how to use a particular technology. This field is immense and there is no possible way for any person to understand it all.

But when someone said they could do something a particular way and the results suggest otherwise I find it completely frustrating.

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It's extremely hard to prove things in programming.

You can either develop both options and pick the best, or you can use "best practices", which is non scientific. Authority and tradition make best practices.

Also "don't @ me" about basic logic like nested loops and bigO. That's not what I'm talking about here.

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