Well, adding joins to the outermost query can limit your options re how you use the scope. For instance, `joins` sets a read-only flag on the AR result, so you

Well, adding joins to the outermost query can limit your options re how you use the scope. For instance, `joins` sets a read-only flag on the AR result, so you can't say Employee.with_assignments.destroy_all, for example, to, um, fire all your busy people. :-)