Russell L. Ackoff Quote

The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold strongly – they just assert them. Nor do they bother to refute what they strongly believe is false.


p. 8, bold text cited in: Gregory H. Watson (2010). - A little book of f-laws: 13 common sins of management, 2006


The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold...

The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold...

The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold...

The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold...