<s>
Waterbed	B-Language
theory	I-Language
is	O
the	O
observation	O
,	O
ascribed	O
to	O
Larry	O
Wall	O
,	O
that	O
some	O
systems	O
,	O
such	O
as	O
human	O
and	O
computer	O
languages	O
,	O
contain	O
a	O
minimum	O
amount	O
of	O
complexity	O
,	O
and	O
that	O
attempting	O
to	O
"	O
push	O
down	O
"	O
the	O
complexity	O
of	O
such	O
a	O
system	O
in	O
one	O
place	O
will	O
invariably	O
cause	O
complexity	O
to	O
"	O
pop	O
up	O
"	O
elsewhere	O
.	O
</s>
<s>
Waterbed	B-Language
theory	I-Language
has	O
been	O
cited	O
as	O
a	O
significant	O
part	O
of	O
the	O
design	O
philosophy	O
of	O
Raku	B-Application
.	O
</s>
