Comment by huherto
Paraphrasing. Closed doors (focused work) lets you reach local minimum faster. Open doors (More connections) lets you escape local minimums.
I guess you need focused work to make progress but once in a while you need contact with others to find inspiration or new ideas.
Another one similar phrase(kinda). "If you want to go fast go alone. If want to go far go together". African proverb.
This is exactly the right framing and that was going to be the same quote I chose (go far together…)