I believe this article is missing the point. When you're physically present at the office, you get plenty of opportunities to have conversations with different people and voice your opinion, revealing your thought patterns, values and abilities. These often complement and boost people's observations of you during actual assigned work.

This effect is not about "passive face time" or merely people seeing that you're there from a distance. It is about plugging into the whole environment in the office - which is what you need your leaders to be good at.

Taking it further, a bunch of great happenstance opportunities really come up by being in the right place at the right time talking to the right people hitting the right chords. You will never stumble upon these opportunities if you're constantly away, chucking away at your "assigned" duties.