Three months = 60 working days.<p>Two devs, so 120 working days.<p>300k lines of code. So, 2500 lines of production code rewritten per day. Sustained for three months. No holiday. No days off.<p>And this code was tested to be equivalent of the old code. So, let&#x27;s say, being conservative, another 2500 lines of test code per day. (It&#x27;s a lot more that, of course, in most cases.)<p>So 5000 lines of working, tested code per day.<p>Plus, the team of two were checking in with the users to make sure everything was hunky dory. And the new team was designing a new &quot;model of the world far better than the original developers ever did&quot;.<p>I&#x27;d have gone along with that bullshit until the final sentence: Working code people want to use trumps everything. No, no, young ninja, rock star, Jedi: Working maintainable code trumps everything.