It is true of Egyptian history that the Old Kingdom was the time of the construction of the great pyramids. This period was the time that the Egyptian civilization was at its peak.
Drew could pick anyone he wanted, but it would all come down to that anything is possible. For instance the people he picks could not work well with each other or they might like working by themselves. They could even be lazy or any other negative characteristics that could cause the project to not be at it's best. And not always people are how they seem they could be having problems in life, or acting like you want them to in order to join the project/team.
