, in response to your earlier post: I fully concede that, if Vaal was constructed by an external force to enslave the population of this world, the PD would be null and void. But that strikes me as being a bigger leap into assumptions than the idea that it was a solution (to what problem I do not know nor do I really need to--nor does Kirk) arrived at by the ancestors of the inhabitants. This is a simple YMMV point and I don't think it needs extensive debate. However, the rest of your argument--that development should not have an end-point and that an alien race, in its superior wisdom (those aliens, in this case, being human) should be able to come in and change things--is precisely the kind of thinking the PD seems designed to prevent (well, not the thinking so much as the acting on that thought). It still boils down to saying essentially "As a Starfleet officer, your prime directive is to refrain from interfering with the internal affairs of other cultures--unless you really, really, really don't like what they are doing."