The Guide Law

The Guide Law now is :

A Guide is honest, reliable and can be trusted.

A Guide is helpful and uses her time and abilities wisely.

A Guide faces challenges and learns from her experience.

A Guide is a good friend and a sister to all Guides.

A Guide is polite and considerate.

A Guide respects all living things and takes care of the world
around her.

This is an earlier version:

And in 1926 it was:

A Guide’s honour is to be trusted
A Guide is loyal to the King and her
Guiders, and to her parents, her country and her employers or employees.
A Guide’s duty is to be useful and to help others.
A Guide is a friend to all,
and a sister to every other Guide, no matter what social
class the other belongs.
A Guide is courteous.
A Guide is a friend to animals.
A Guide obeys orders of her parents, patrol leader or
Captain, without question.
A Guide smiles and sings under all difficulties.
A Guide is thrifty.
A Guide is pure in thought, word and deed.

This is a picture I saw in Foxlease. It was written by Baden-Powell, it has an Eleventh Law - I'm not sure I understand...is it that "A guide is no fool" or am I a fool for not understanding?