I am wondering what this statement actually means: > The reverse predicate from this section should not be used in practice - most Prolog implementations actua

I am wondering what this statement actually means: > The reverse predicate from this section should not be used in practice - most Prolog implementations actually provide a built-in version which is a lot more performant than our implementation. I think it can be read as: If you care about speed do not use Prolog, instead write a "built-in" solution.