[nostrademons]

"Skilled profession" isn't defined by what you can learn from any textbook or theory. Just try mentoring a fresh CS grad out of MIT or Stanford - they will know all the theory and textbook algorithms, but there will still be huge gaps in their knowledge of how that translates to solving practical programming problems.

A skilled profession is one that involves skills, i.e. things you can practice at to get better in. Retail clerks and fast food workers are generally not considered skilled professions because no matter how much you practice or improve, the customer will generally not care. Management or even something like professional basketball is a skilled profession, because there are large differences in the performance of workers based on their level of experience and practice.