Effectiveness thus deserves high priority because of the needs of organization. It deserves even greater priority as the tool of the executive and as his access to achievement and performance.

Efficiency is doing things right, but effectiveness is doing the right things.

Effectiveness knows what efficiency will never learn.

After all, everybody strives to be operationally efficient; there is no lasting advantage in adopting modern management practices, because every company will use these techniques if they prove effective. Smart strategic moves create differences between companies. Investments in operational effectiveness reinforce similarities (figure 15-1).

For manual work, we need only efficiency; that is, the ability to do things right rather than the ability to get the right things done.

“Efficiency is doing things right; effectiveness is doing the right things.” – Peter Drucker

Being effective is doing the right thing."

“There is nothing so useless as doing efficiently that which should not be done at all.”—Peter Drucker