dover
We have many posters here on audiogon who are experts on products they have never heard. They usually resort to scientific arguments - but of course they forget that scientific research and discovery should include both theory and practise (testing). I call it the new science, in the old days they would have called it speculation ...
Oh yes, there are a few users here who fit your description, @dover. Oddly, those users seem to seek recognition as experts or gurus and they can become quite combative if questioned.
One thing I learned long ago on my high end journey: You can’t be certain how something sounds - for better or worse - by merely reading a spec sheet or looking at a photo. Our hobby isn’t that simple.