There is zero truth to this. Most of those 'principles' are nothing but opinions. Appropriateness is entirely subjective. There is no such thing as an education in such things and there is nothing to 'grasp.'
This is the most snobbish and absurd thing I've seen on this forum in a long time.
It's not snobbish nor absurd to claim—essentially—that taste is acquired through an education over the years.
That is not to say, however, that concepts of architectural beauty or the principles by which we arrive at them are not entirely subjective: they are. It's just that there are collective agreements of what the principles are, though these are not singular but plural.
These agreements result in architects, art historians, musical theoreticians, etc., gaining their degrees, and artists, dancers, singers, etc., their metiers—and livelihoods when these practitioners of the arts create work which others collectively agree merit spending money on.
Again, there isn't a singular measure of what is considered beautiful, but in our cultural context the prevailing agreement is often referred to as the classical western/European notion of beauty. Challenges to what would be included in the prevailing notion appear over time—at one point few would agree that Mies van der Rohe's Barcelona Pavilion, posted above by thedeepend, would fit comfortably within the range of acceptable expression—but time allows for the refinement and reapplication of principles and the gradual acceptance of styles such as Modernism, or Impressionism to refer back to another recent post, into the canon.
Do we get universal acceptance of what is in the canon? No. Do we as a pluralistic culture have prevailing notions of what is? Despite the plurality, yes. Do we become more familiar with recognizing and creating objects that fall within the scope of the canon through an education? Theoretically we can, "improving" or refining or better attuning ourselves to the notions of beauty throughout our lives. Can we challenge the notions? Yes, but it's the rare individual or group that successfully introduces new original thought or styles, most of us are just followers.
Can expression which lies outside notions of classical western beauty be considered beautiful? Sure, within subsets of society. I fully understand that as a fan of Brutalism that I'm part of a group of societal outliers in that regard. Was I innately a fan of Brutalism from birth? No, I acquired my taste for it through a mostly informal education.
Is education snobbery? No, it's life, including life on the internet.
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