That at the end of the day, this is all controlled and used by human beings, who are notoriously known for sometimes being mean and selfish? Examples: the 80/

That at the end of the day, this is all controlled and used by human beings, who are notoriously known for sometimes being mean and selfish? Examples: the 80/20% project work that is described is a really good idea IMHO, however if somebody choses to work 50/50 in a period, becuase that person is "almost finished and longing to present it", then it might turn into a problem for the team leader and the employee. Software sometimes fails, even highly sophisticated build automation. Rewriting software may introduce a sense of ownership to employees, but it may also lower the quality of the code that is being rewritten - worst case to the extend that the code needs another rewriting to even function as intended. ...but why let yourself get blocked by the negatives, instead of being inspired by the positive?