Rewriting apps (esp. as large as Uber) is essentially your plan meeting the enemy. There's many unknown-unknowns simply because technology is complex, and altho

Rewriting apps (esp. as large as Uber) is essentially your plan meeting the enemy. There's many unknown-unknowns simply because technology is complex, and although it's pretty much unprovable, the brisk pace of technology also means you'll have more unknown-unknowns. Only a big industry shift in priorities will change that now.