@Olivier5,
Oliver, this is one of the most satisfying posts I've read in a long time. It's relativistic pragmatism is very sober and balanced (one might even use the term "wise").
Adequate answers are never "absolutely" perfect but they may be "relatively" satisfactory" regarding their compliance with logical norms and empirical canons of evidence. They may even be adequate with respect to inadequate questions (especially when they are logically "valid" even if not empirically "true"). It is one of my grandest
guesses--I don't completely disagree with Frank--that we will never find the perfect answer to a perfect question because we are neurologically incapable of either one. But we can find answers to functionally necessary or desireable questions, such as those of engineering and medicine, i.e., practical expressions of Science*
I think that most of us have philosophical moments of adequacy but in our ambition to overwhelm and humiliate our "opponents" we fall short of contributions to philosophical progress. I like it when I am challenged over the long term. A2K has helped me to take a more realistic and balanced attitude toward my worldview, not by showing me how I am completely wrong and my critics completely right, but by showing me that I and they have views that are inevitably partial rather than complete.
* I tend to visualize Science as a triangle with one side touching Engineering (e.g. medicine), another side touching Philosophy (e.g. truth seeking, with a small "t") and Cosmology/Religion (e.g., truth seeking, with a large "T").