They fell into the big rewrite trap ... possibly driven by developers hoping to clear out some cruft<p><a href="http:&#x2F;&#x2F;www.joelonsoftware.com&#x2F;articles&#x2F;fog0000000069.html" rel="nofollow">http:&#x2F;&#x2F;www.joelonsoftware.com&#x2F;articles&#x2F;fog0000000069.html</a>