Hi , i ve read that when the same fact is logically inserted into a session by more rules, only one equal instance will be physically present in the session. On the other hand, i learned that Drools supports two fact insertion modes :equality and identity.Identity (which is the default) means that no two objects with the same JVM object reference can be inserted into the knowledge session. what if the equality mode is set and the logical assertion is used ? does these modes only concerns the non logical assertion and not the logical? i ve found in an exemple in the Drools-JBoss-Rules-5.0-Developers-Guide, that each logically inserted fact has a counter which is incremented every time an equal fact is inserted. Does this counter belongs to the drools specification ? -- View this message in context: http://drools.46999.n3.nabble.com/Logical-assertions-the-KnowledgeBaseCon... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users