"Wherever they be they can never agree-- Jubal and Tubal Cain." Is there any way..?

Question

...profoundly different sides can be brought into profitable civilised discussion?
Can a small piece of common ground be found to start from, or are those in opposite camps stuck with hurling brickbats at each other, or quoting "evidences" that the other side does not accept?
(Or equally futile strategies that only generate heat, not light.)

The line is from a favourite poem by Kipling
http://whitewolf.newcastle.edu.au/words/authors/K/KiplingRudyard/verse/p3/jubaltubal.html

Answer 1

Yea..what you said.

(what did you say?)