Economies of Scale

In some cases it makes sense to incur higher costs because the output to be achieved is much higher if one does.

It might be cheaper to have one person weed your crops for ten days than ten people weed for one day, but, in ten days, your crops might be strangled by the weeds.

However, more is not always better. Just as there are economies of scale, there are also diseconomies of scale. Ten people weeding for one day might be the optimal scale. Adding an eleventh person may decrease your efficiency rather than increase it. In other words, a boy is a boy...

elasticity