A recipe for disaster is for a manager's code to wind up on the critical path, then become a blocker - bad code & bad management. A possibly better approach is

A recipe for disaster is for a manager's code to wind up on the critical path, then become a blocker - bad code & bad management. A possibly better approach is for managers to have a few side proejcts, scouting out potential risk reducing things, at a higher temperature, away from the main project. Great if one of them lands - no added problems if not. Also, if they land in the project, they are no longer the responsibility of the manager.