Some functionality requires collaboration to succeed. Since everyone has the ability, but the ability of all people is limited. Bringing everyone together, it can be more work.
Some functionality requires working together will be successful because everyone has talents, but everyone's capabilities are limited. Bringing everyone's ability to come together, thus resulting in more work.
For some work requires a great working together, to be a success because everyone has the ability, but the ability of everyone has a limit to the ability of people to work together, it was more.