
An expert is a person who has made all the mistakes that can be made in a very narrow field.
Niels Bohr
apr
30
2013

An expert is a person who has made all the mistakes that can be made in a very narrow field.
Niels Bohr
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There is nothing so useless as doing efficiently that which should not be done at all. Peter Drucker |
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Diep Werk Bij Bol.com | Managementboek |