i think it is too simplified world view. There are many professions out there, where it is not so easy or possible to practice street smart – eg management. Without prior book smart, it is recipy for disaster. We see many managers being promoted without theoretical background, without reading skill or even interest in it – which result in 80% of people dissengaged at work, underperformance, fluctuation, unnecessary stress…. Often it is too late building your book smart when you get chance for real practicing street smart. One must be prepared upfront and there is no train around it.