FlexGunship said:
This feels dangerously like semantics.
Question: can a set of universal human rights exist?
Premise: human rights exist; they appear to be different (hence the question)
Proposed solution: if a universal set of human rights exist, then they must be a property of being human (i.e. not a property of culture)
Elaboration: for the first time in history, our species has the technology to explore the list of possible human rights
Supposition: rights could not possibly be based on actions or external sources since an action can fail to happen and a source could become invalid (could leave, be found not to exist, etc.)
Contrary proposed premise: They do not exist, but that's no reason we shouldn't strive to uphold them. It's the act of trying to believe others have rights that allows for progress, and that in turn is tempered by the conservative view.
Your proposed solution also contains a fatal assumption: If they exist, they're a property of being human. I would say there is NO universal human experience that isn't biological (eating, sleeping, sex if we're lucky, masturbation if we're not...), and that people are above all, shaped by their environment and the necessities which result. The 'modern day vendetta' pathology is a matter of, again, the uneven progress of civilation towards our own imagined ideals.
Elaboration: Do we? Do we really? I would argue that before such a thing can be said with confidence we have to better understand and define (biologically) just what is, 'love and affection', or a suicidal impulse vs. a desire to end a terminal disease, love, hate, consciousness. I would say we've just begun to move beyond the glorified phrenology of tracking blood-flow in an fMRI to the integration of that data with much more. Still, the brain requires vast study from the single neuron, to regions, and CC-spanning networks.
IF we have the technology to determine what really is a good life for people (beyond the broad strokes like no torture), then we're going to have to accept the diversity of billions of those lives.
One other problem... the big one... why do you believe rights exist? I believe there are a range of conditions which produce a range of results, but if there is no GOOD outcome, there can be no good journey to it. We're all going to die, and our planet is going to be blasted by our sun in a few billion years. WHERE do the rights come from, if not an external source (which we both agreed to reject, and I personally don't believe in)?
How can there be intrinsic human rights, and not simply social constructs? Maybe that's the semantic issue you're talking about, but really without killing the meaning of an intrinsic right, we probably should use another term... hence my MEP proposal.