more acceptable demo

config.py

             'cant_put_still': 5
         },
         'put': {
-            'max_objects_at_same_position': 1,
+            'max_objects_at_same_position': 5,
             'max_put_fail_count': 20
         }
     },

intelligine/synergy/object/ant/Ant.py

 from intelligine.synergy.object.Food import Food
 from intelligine.simulation.object.molecule.MovementMoleculeGland import MovementMoleculeGland
 from intelligine.simulation.object.brain.AntBrain import AntBrain
+import random
 
 
 class Ant(Bug):
                                                            COL_FIGHTER])
         self._carried = None
         #  TODO: Comme pour lorsque une action put est faite, lancer un algo de choix de la mission a suivre.
-        self._brain.switch_to_mode(MODE_EXPLO)
+        if random.choice([0, 1]):
+            self._brain.switch_to_mode(MODE_EXPLO)
+        else:
+            self._brain.switch_to_mode(MODE_NURSE)
         context.metas.list.add(TYPE, self.get_id(), TYPE_ANT)
         self._put_fail_count = 0