{HEAD ~ Method} and system for dispatching a message to an alternate object upon its failure to find {TAIL ~ a required method} at the object to which originally sent 
{ HEAD ~ Method } and system for dispatching a message to an alternate object upon its failure to find { TAIL ~ a required method } at the object to which originally sent
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH