Young Blonde Girl Naked On A Walkway

In robotics
The first successful attempts at walking robots tended to have six legs. The number of legs was reduced as microprocessor technology advanced, and there are now a number of robots that can walk on two legs. One for example, is ASIMO. Although robots have taken great strides in advancement, they still don't walk nearly as well as human beings as they often need to keep their knees bent permanently in order to improve stability.