A few years ago, I was in a meeting at a client’s, and the discussion turned to teamwork. I jokingly said “teamwork is for people who cannot be trusted with complex tasks on their own”, at which point the whole room exploded in laughter (well, everyone laughed except the agile coach).
And even though my joke has since become a pinned tweet, it is in all fairness only true in a limited context. In most of our day-to-day work, we need the help of others, and they rely on ours.