<s>
The	O
principle	B-General_Concept
of	I-General_Concept
rationality	I-General_Concept
(	O
or	O
rationality	O
principle	O
)	O
was	O
coined	O
by	O
Karl	O
R	O
.	O
Popper	O
in	O
his	O
Harvard	O
Lecture	O
of	O
1963	O
,	O
and	O
published	O
in	O
his	O
book	O
Myth	O
of	O
Framework	O
.	O
</s>
<s>
The	O
'	O
principle	B-General_Concept
of	I-General_Concept
rationality	I-General_Concept
 '	O
is	O
the	O
assumption	O
that	O
people	O
are	O
instrumental	O
in	O
trying	O
to	O
reach	O
their	O
goals	O
,	O
and	O
this	O
is	O
what	O
drives	O
the	O
model	O
.	O
</s>
<s>
Popper	O
called	O
his	O
'	O
principle	B-General_Concept
of	I-General_Concept
rationality	I-General_Concept
 '	O
nearly	O
empty	O
(	O
a	O
technical	O
term	O
meaning	O
without	O
empirical	O
content	O
)	O
and	O
strictly	O
speaking	O
false	O
,	O
but	O
nonetheless	O
tremendously	O
useful	O
.	O
</s>
<s>
Among	O
the	O
many	O
philosophers	O
having	O
discussed	O
his	O
'	O
principle	B-General_Concept
of	I-General_Concept
rationality	I-General_Concept
 '	O
from	O
the	O
1960s	O
up	O
to	O
now	O
are	O
Noretta	O
Koertge	O
,	O
R	O
.	O
Nadeau	O
,	O
Viktor	O
J	O
.	O
Vanberg	O
,	O
Hans	O
Albert	O
,	O
E	O
.	O
Matzner	O
,	O
Ian	O
C	O
.	O
Jarvie	O
,	O
Mark	O
A	O
.	O
Notturno	O
,	O
John	O
Wettersten	O
,	O
Ian	O
C	O
.	O
Böhm	O
.	O
</s>
<s>
In	O
the	O
context	O
of	O
knowledge-based	B-General_Concept
systems	I-General_Concept
,	O
Newell	O
(	O
in	O
1982	O
)	O
proposed	O
the	O
following	O
principle	B-General_Concept
of	I-General_Concept
rationality	I-General_Concept
:	O
"	O
If	O
an	O
agent	O
has	O
knowledge	O
that	O
one	O
of	O
its	O
actions	O
will	O
lead	O
to	O
one	O
of	O
its	O
goals	O
,	O
then	O
the	O
agent	O
will	O
select	O
that	O
action.	O
"	O
</s>
<s>
This	O
principle	O
is	O
employed	O
by	O
agents	O
at	O
the	O
knowledge	B-General_Concept
level	I-General_Concept
to	O
move	O
closer	O
to	O
a	O
desired	O
goal	O
.	O
</s>
<s>
An	O
important	O
philosophical	O
difference	O
between	O
Newell	O
and	O
Popper	O
is	O
that	O
Newell	O
argued	O
that	O
the	O
knowledge	B-General_Concept
level	I-General_Concept
is	O
real	O
in	O
the	O
sense	O
that	O
it	O
exists	O
in	O
nature	O
and	O
is	O
not	O
made	O
up	O
.	O
</s>
