Code reviews keep developers honest. Left to their own devices, developers will employ their terrible habits which sneak into the code base. Code reviews isn't

Code reviews keep developers honest. Left to their own devices, developers will employ their terrible habits which sneak into the code base. Code reviews isn't just about reviewing the code but it's raising the bar for what is actually presented as complete. It separates sloppy code from complete, fully tested code. Developers are lazy and will look for shortcuts if standards are not maintained.