<s>
The	O
Knights	B-Application
of	I-Application
the	I-Application
Lambda	I-Application
Calculus	I-Application
is	O
a	O
semi-fictional	O
organization	O
of	O
expert	O
Lisp	B-Language
and	O
Scheme	B-Language
hackers	O
.	O
</s>
<s>
The	O
name	O
refers	O
to	O
the	O
lambda	B-Language
calculus	I-Language
,	O
a	O
mathematical	O
formalism	O
invented	O
by	O
Alonzo	O
Church	O
,	O
with	O
which	O
Lisp	B-Language
is	O
intimately	O
connected	O
,	O
and	O
references	O
the	O
Knights	O
Templar	O
.	O
</s>
<s>
There	O
is	O
no	O
actual	O
organization	O
that	O
goes	O
by	O
the	O
name	O
Knights	B-Application
of	I-Application
the	I-Application
Lambda	I-Application
Calculus	I-Application
;	O
it	O
mostly	O
only	O
exists	O
as	O
a	O
hacker	O
culture	O
in-joke	O
.	O
</s>
<s>
For	O
example	O
,	O
in	O
the	B-Language
Structure	I-Language
and	I-Language
Interpretation	I-Language
of	I-Language
Computer	I-Language
Programs	I-Language
,	O
Gerald	O
Jay	O
Sussman	O
presents	O
the	O
audience	O
with	O
the	O
button	O
,	O
saying	O
they	O
are	O
now	O
members	O
of	O
this	O
special	O
group	O
.	O
</s>
<s>
A	O
group	O
that	O
evolved	O
from	O
or	O
is	O
similar	O
to	O
them	O
,	O
called	O
The	O
Knights	O
of	O
Eastern	O
Calculus	O
,	O
make	O
a	O
major	O
appearance	O
in	O
the	O
anime	O
series	O
Serial	B-Application
Experiments	I-Application
Lain	I-Application
.	O
</s>
<s>
At	O
one	O
point	O
in	O
the	O
anime	O
,	O
Lain	O
is	O
seen	O
with	O
code	O
displayed	O
on	O
her	O
handheld	O
device	O
that	O
appears	O
to	O
be	O
Lisp	B-Language
.	O
</s>
