This is a great question, with a complex
answer. First, we have to define what a robot
Typically, we think of robots as machines
which can automatically carry out a complex set of
actions. We usually think of these machines as
being computers which are programmed by humans.
However, there are a variety of materials which
can act as "robots" in the sense that they can be
"programmed" to perform actions such as "walking."
For this question though, let's just think about
the robots we define as computers which are
programmed by humans. A lot goes into designing
robots that can walk. Here are a few things to
think about. One of the most basic things needed
is to write a computer program which will
instruct the robot to respond to its
environment appropriately under different
conditions. For instance, what should the robot
do if it encounters a wall or another obstacle?
What about stairs? The robot will also need
some way to get information about its environment
in order to make these kinds of choices. Thus, the
robot must be build with materials which can
transmit some kind of signal to process
information. The robot must also be built in a way
that is stable enough for it to walk and not
fall over as it moves forward on its own, or
if it accidentally bumps into something. It will
also need a source of power (a battery) to
do any of these tasks. These are just some of the
considerations that go into making robots that can
walk. I hope this helps!
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