Tabooing doesn't work here, you can only taboo your terms so far before you've completely severed yourself from the semantics of your language. If you don't understand what suffering is at a visceral level then no experimental contrivance will clarify the notion for you.
If you don't understand what suffering is at a visceral level then no experimental contrivance will clarify the notion for you.
That's pure hand-waving.
Look: "I think this rock here is suffering. I can't prove it, but if you don't feel it at a visceral level then no experimental contrivance will clarify it for you"
This seems significant:
http://www.theguardian.com/science/2015/aug/18/first-almost-fully-formed-human-brain-grown-in-lab-researchers-claim