 Examples of work in this vein includes robots such as W. Grey Walter 's turtles and the Johns Hopkins Beast . These machines did not use computers , digital electronics or symbolic reasoning ; they were controlled entirely by analog circuitry . 
 Examples of work in this vein <a href='uninflect' title='1'><mark>includes</mark></a> robots such as W. Grey Walter <a href='null_genetive' title='2'><mark>'s</mark></a>turtles and the Johns Hopkins Beast . These machines did not use <a href='negative_concord' title='3'><mark>computers</mark></a> , digital electronics or symbolic reasoning ; they <a href='uninflect' title='4'><mark>were</mark></a> controlled entirely by analog circuitry . 
Examples of wrk in this vein include robots such as wit. Grey Walter  turtles and da Johns Hopkins Beast . dem machines did not use no computers , digital electronics or symbolic reasoning ; they was controlled entirely by analog circuitry .