Dan Luu quoting Joel Spolsky:
“Find the dependencies — and eliminate them.” When you're working on a really, really good team with great programmers, everybody else's code, frankly, is bug-infested garbage, and nobody else knows how to ship on time.
[..] We didn't think that everyone else was producing garbage but, we also didn't assume that we couldn't produce something comparable to what we could buy for a tenth of the cost.