In the end, it doesn't matter what transformation you do though, as long as you do it consistently and/or not in an ad hoc manner. If excluding the original ter

In the end, it doesn't matter what transformation you do though, as long as you do it consistently and/or not in an ad hoc manner. If excluding the original term always leads to useful results, it is a useful transformation. The problems materialize when you're just cherry picking for results.