This is actually the same argument I had with myself about active versus passive flexibility back in the 80’s and the paradox of “the unreasonable man”. No point being so open minded that you believe anything in an ephemeral way, blowing with the wind, so to speak. You should hold opinions, preconceptions you understand, not just cultural schemata, but should actively be prepared to test them against any other view and modify the view held or not, accordingly. Without this there is no coherence, and no evolution or progress either.
I like Johnnie’s blog – looks interesting. His punchline is “I think the best thing to do is show and say more of what you really think, with whatever true vehemence seems fitting to you at the time!” ie Clarifying your opinions is important, how hard you defend them (or not) depends on circumstances. I see Johnnie bought the Cluetrain Manifesto too. Man after my own heart.
Also like Evelyn’s punchline “Agreement is not necessary, thinking for oneself is.”