When your objective is to put programmers together in one office and make them look like hard working slaves, spending the money of your investors, you definitely need full-timers, with good salaries and benefits. However, if you need to achieve results, and you know how to manage programmers, you need freelancers, who work for results, for money, and for themselves. You don't mix those two categories, they are absolutely different. And you don't apply the same selection criteria to those two groups.
The video is here: https://www.youtube.com/watch?v=hDsy-D5zaVs
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