When we create programs in a professional way, it is done in teams. There is no one-man show programming other than in a hobby or going along with the tutorials. It is not only because it is more effective to work in teams but also because one person is vulnerable. If you work alone and get hit by the bus or you hit the lottery and lose your ability or motivation to work on the project, your customer is in trouble. That is not professional. Professional projects should be resilient to any member falling off.
Teamwork needs cooperation and one form of cooperation is code review. This is the process when a developer or a group of developers reads a part of the code that some other team members have written. There are direct gains ...
