Why is "Learning" so Misunderstood?

I have written a few posts where I make the point that most of the important knowledge that is needed to build intelligent agents is not learned --because it cannot be learned differently, and it cannot be susceptible for incremental, approximate and individual learning from observations. I have written about this topic first in "Learning is Overrated: Machine Learning vs. Knowledge Acquisition" where I discuss the difference between "knowing how" and "knowing that". Recently, I wrote a post where I explain "Why Commonsense Knowledge is not (and can not be) Learned". In comments and (mostly private) messages I keep getting remarks like "but why can't that be learned?" It seems that the'folk' meaning of learning has taken over even the most rational of people that the techncial point I'm trying to get across is still not appreciated.