Expertness used in a sentence

Expertness in a sentence as a noun

I've said "expertness" here because I have no better term for it, it does not mean extensive, correct, complete, or any such usual quality.

While dtrace is extremely robust, it is usually, in my case, not pulled up thanks to the level of expertness needed to really dig properly.

Obviously it will be contentious to define "expertness".

Instead of trying to define "expertness" we could weigh the human predictions by the individual's success rate at previous predictions.

What is shown in studies of expert performance is that there's a very strong correlation between the hours of deliberate practice and expertness in some field.