anchor.diff:      end,
       react_to_env_C120(P_latest, [], S).
   
  -react_to_env_C120(P_latest, FinalProps, #ch_mgr{proj_history=H}=S) ->
  +react_to_env_C120(P_latest, FinalProps, #ch_mgr{proj_history=H,
  +                                                sane_transitions=Xtns}=S) ->
       ?REACT(c120),
       H2 = queue:in(P_latest, H),
       H3 = case queue:len(H2) of
  
positive.code: react_to_env_C100_inner(Author_latest, NotSanesDict0, MyName,
                          P_newprop, P_latest, S) ->
      NotSanesDict = orddict:update_counter(Author_latest, 1, NotSanesDict0),
      S2 = S#ch_mgr{not_sanes=NotSanesDict},
      case orddict:fetch(Author_latest, NotSanesDict) of
          N when N > ?TOO_FREQUENT_BREAKER ->
              ?V("\n\nYOYO ~w breaking the cycle of ~p\n", [MyName, machi_projection:make_summary(P_latest)]),
  
negative.code: 
      ?REACT({c120, [{latest, machi_projection:make_summary(P_latest)}]}),
      {{now_using, FinalProps, P_latest#projection_v1.epoch_number},
       S#ch_mgr{proj=P_latest, proj_history=H3, sane_transitions=Xtns + 1}}.
  
  react_to_env_C200(Retries, P_latest, S) ->
      ?REACT(c200),
  