We are not changed by learning - but by doing.
Learning informs, explains, defines, opens possibilities, and directs; all of which fades to the dormant repository of our memories. Bits of that learning may occasionally rise as a factoid to posit one as knowledgeable, even intelligent. How silly that a culture so highly educated, so dripping in sophistication, persists in exalting the appearance of things and scoffing at the substance.
It is in doing that the learning and knowledge is wrought. It's infused by the engagement of hands, heart, sweat, and trials in the sunny, dirty path of work and play, of strain and song.
Throw your high degree in the Art and Physiology of Swimming into the water. You may write journals and books and teach seminars, but no one will need to towel off after reading or hearing them. One cannot swim with his brain, his intellect.
Learning apart from doing is not even a virtual experience. It's a pretense.