No wonder that people with different learning styles can have problems in this format. Those are the ones more likely to smoke weed, imo.
The authors take "passing courses" as a metric for success. But they fail to realize that there are many previously A grade students who in research positions suddenly don't know what to do since they never developed a proper creativity together with a longing to explore.
This whole mentality of "let's grow our economy by pushing people to what we think is good for growing our economy" is a big stupid fad and will lead to nothing but short-term sucess and long-term mediocrity of failure.
* (and I assume it's not that different in the Netherlands were the study was conducted)