What does a mountaineering team do if they want to reach the summit faster? Should they just add more people to their team, without considering their specific skills, experience with that summit, etc.? I’m not a mountaineering expert, but I don’t think that is the solution. The extra people are more likely to cause additional complications and delays rather than getting the team closer to the summit.
In my experience, this also applies to a project that is being implemented by a well-composed team of specialists. The project won’t necessarily be completed sooner simply because additional employees are hired and added to the project team. Instead, completing the project sooner depends on how the tasks are assigned, how well the team works together, and how skilled and knowledgeable the team members are on the topic. When employee utilization is done right, then productivity and job satisfaction are also increased. It is a win-win!