I’m closing this topic, and pointing to two others that came up via search:
This topic "Objectivism: Closed system " seems to be the longest thread on the topic, though I’m sure one will find related discussion all over the place.
In addition, there is this series of 5 posts by one member, forming a position-paper of sorts, title “Closed System vs. Open System”
The first one would probably be the appropriate place for an ongoing discussion on the topic.