Ensuring the code fits together is an activity that happens before you start coding. If a fellow programmer creates a function and then discusses with me how to

Ensuring the code fits together is an activity that happens before you start coding. If a fellow programmer creates a function and then discusses with me how to integrate this, every single time, I'm not going to get any work done. People can only work in groups when you divvy the work up between them, or if the group all focusses on one thing (one guy holds the fencepole up, the other whacks it with a hammer. One guy codes, the other guy checks the code. Etc). The little full-on focus mode I get is spent on working out which code I need to put where. The remainder, simple code-monkey work, can be done in a normally focussed manner. Constant integration with everyone else's work destroys all focus.