[rules-users] Question about best practice using queries

We are trying to figure out the best way to implement a rule. Is there any difference in processing costs of the following 2 solutions: 1) A fact is inserted into a session and a rule's LHS is evaluated to check if the rule should fire 2) A query is executed on a session with the same criteria as the LHS for the rule from #1 Which one is more efficient or are they implemented the same way and there is no difference? Thanks, Dave McLoughlin | OpenLogic