Take a good employee, add a second good employee and you would think at a minimum, you would have two good employees and hopefully, their productivity might increase to the point where they have a greater combined value than they did apart.
However, if they don’t work well together, two good employees might produce less together than they did apart and sometimes might end up producing absolutely nothing.
We must take into consideration the dynamics of the team and not just the individual abilities when putting people together. Otherwise, one plus one might equal zero
Have a great day!