<s>
Rainbows	B-General_Concept
End	I-General_Concept
is	O
a	O
2006	O
science	O
fiction	O
novel	O
by	O
Vernor	O
Vinge	O
.	O
</s>
<s>
At	O
the	O
same	O
time	O
,	O
Robert	O
and	O
his	O
granddaughter	O
Miri	O
are	O
drawn	O
into	O
a	O
complex	O
plot	O
involving	O
a	O
traitorous	O
intelligence	O
officer	O
,	O
an	O
intellect	O
of	O
frightening	O
(	O
and	O
possibly	O
superhuman	O
)	O
competence	O
hiding	O
behind	O
an	O
avatar	B-Application
of	O
an	O
anthropomorphic	O
rabbit	O
,	O
and	O
ominous	O
new	O
mind	O
control	O
technology	O
with	O
profound	O
implications	O
.	O
</s>
<s>
In	O
the	O
novel	O
,	O
augmented	B-General_Concept
reality	I-General_Concept
is	O
dominant	O
,	O
with	O
humans	O
interacting	O
with	O
virtual	O
overlays	O
of	O
reality	O
almost	O
all	O
of	O
the	O
time	O
.	O
</s>
<s>
This	O
is	O
accomplished	O
by	O
wearing	O
smart	O
clothing	O
providing	O
gesture	B-General_Concept
recognition	I-General_Concept
and	O
contact	O
lenses	O
that	O
can	O
overlay	O
and	O
replace	O
what	O
the	O
eye	O
would	O
normally	O
see	O
with	O
computer	O
graphics	O
,	O
using	O
advanced	O
virtual	B-General_Concept
retinal	I-General_Concept
display	I-General_Concept
(	O
VRD	O
)	O
technology	O
.	O
</s>
<s>
In	O
addition	O
,	O
haptic	B-Device
feedback	O
is	O
possible	O
by	O
overlaying	O
graphics	O
onto	O
a	O
physical	O
machine	O
such	O
as	O
a	O
robot	O
.	O
</s>
<s>
The	O
Cheapnet	O
,	O
a	O
free	O
entry-level	O
service	O
offered	O
by	O
commercial	O
vendors	O
of	O
gaming	O
solutions	O
,	O
can	O
in	O
principle	O
also	O
be	O
used	O
to	O
coordinate	O
networked	O
augmented	B-General_Concept
reality	I-General_Concept
representations	O
across	O
the	O
globe	O
.	O
</s>
<s>
However	O
,	O
jitter	B-Architecture
and	O
latency	O
are	O
considerable	O
problems	O
with	O
this	O
basic	O
network	O
when	O
long	O
distances	O
are	O
involved	O
.	O
</s>
<s>
A	O
user	O
's	O
skill	O
in	O
managing	O
and	O
producing	O
augmented	B-General_Concept
reality	I-General_Concept
manifests	O
itself	O
in	O
the	O
details	O
of	O
the	O
augmentation	O
.	O
</s>
<s>
There	O
are	O
many	O
realities	O
to	O
choose	O
from	O
in	O
the	O
novel	O
;	O
however	O
,	O
the	O
largest	O
and	O
more	O
robust	O
of	O
them	O
are	O
built	O
by	O
large	O
user	O
bases	O
in	O
the	O
manner	O
of	O
a	O
wiki	B-Protocol
or	O
Second	B-Application
Life	I-Application
.	O
</s>
<s>
Several	O
belief	O
circles	O
are	O
presented	O
in	O
the	O
novel	O
,	O
including	O
worlds	O
based	O
on	O
authors	O
such	O
as	O
H	O
.	O
P	O
.	O
Lovecraft	O
,	O
Terry	O
Pratchett	O
,	O
and	O
the	O
fictional	O
Jerzy	B-General_Concept
Hacek	I-General_Concept
.	O
</s>
<s>
As	O
in	O
Vinge	O
's	O
other	O
work	O
,	O
the	O
concept	O
of	O
security	O
in	O
such	O
an	O
increasingly	O
digital/virtual	O
world	O
with	O
ubiquitous	B-Architecture
computing	I-Architecture
is	O
a	O
major	O
theme	O
of	O
the	O
novel	O
.	O
</s>
