1. A system for guiding a steerable object in motion from a first site toward a second site comprising: sensing means for generating first and second sensed variable signals corresponding to bearings from the first site to the steerable object and from the first site to the second site; first storage means for storing first and second sets of sensed linguistic variables; second storage means for storing at least one of a set of control output linguistic variables; first selection means for selecting at least one of the sensed linguistic variables from each of the sets in said first storage means in response to the first and second sensed variable signals; second selection means responsive to the selected sensed linguistic variables for producing a control output based upon the selection of at least one of a set of control output linguistic variables; means for generating a guidance command for controlling the steerable object in response to the control output from said second selection means; and means for transferring the guidance command to the steerable object.