Chapter
Conclusions
Engineers
are
often
are
una
w
are
as
to
the
con
tribution
they
are
truly
making
to
a
eld
un
til
their
in
v
en
tion
reac
hes
the
hands
of
the
public
Suc
h
has
b
een
the
case
in
dev
eloping
the
laser
range nder
for
the
user
in
terface
comm
unit
y
It
w
asn t
un
til
the
range nder
w
as
demonstrated
at
the
Media
Lab
for
a
tec
hnical
and
computer h
uman
in
terface
comm
unit
y
that
I
b
egan
to
understand
the
uniqueness
of
suc
h
a
device
That
alone
didn t
fully
pro
v
e
its
w
orth
Demonstrating
it
at
SIGGRAPH
brough
t
the
device
out
to
a
more
general
audience
tec
hnically
adept
in
man
y
elds
but
new
to
man
y
of
the
ideas
of
HCI
design
Computer
programers
ha
v
e
b
een
plagued
b
y
the
mouse
and
k
eyb
oard
in
terface
that
is
standard
on
to
da
y s
computers
That
is
c
hanging
and
programmers
will
ha
v
e
to
think
of
ho
w
to
e ectiv
ely
use
the
emerging
hardw
are
The
laser
range nder
is
suc
h
a
device
It
is
bringing
us
closer
to
a
more
natural
w
a
y
of
in
teracting
with
a
computer
The
curren
tly designed
v
ersion
is
only
the
rst
step
and
other
v
ersions
and
mo
di cations
can
b
e
forseen
op
ening
up
ev
en
more
applications
Mini
Time
of
Fligh
t
The
nal
range nder
that
w
as
dev
elop
ed
w
as
mostly
analog
in
its
construction
This
required
the
use
of
sp
ecial
comp
onen
ts
rated
at
a
fairly
high
frequency
The
cost
of
suc
h
comp
onen
ts
is
signi can
t
It
also
requires
careful
planning
in
the
la
y
out
of
the