One good observation from the article is that more simple questions is better than a few harder ones. Not much besides this. My observation is that recruitment

One good observation from the article is that more simple questions is better than a few harder ones. Not much besides this. My observation is that recruitment is only one part of the problem. The other part is that companies do very poor job at assessing skills during employment and loose/fire randomly. This seems to be much more important problem for top companies leading to slow degradation of skills over time.