Not sure I agree on the Naive part. Even if one is naive, they will not always do something that is against their nature or their own morals and values. Perhaps a sub-set of Naive would be peer pressure, that I could see - but even someone who is gullable will not necessarily pick up a knife because you've told him that "it's OK - no-one will be impacted. It's only a knife".
Apathetic - I like it. Don't see it as a flaw though. I'd consider it an edge for Rogues and Barbarians - or at the least something that is just a part of the Order, neither Edge or Flaw - just is. What do I care if I take your gold - if I did care, it'd make me a lousy Rogue. Not my battle - not until they take my sheep will I be concerned, live to fight another day.
Warriors have their own code of honour. Chivalry will normally win out, but not all knights shine nor have honour, so for a fallen knight, then yes - Apathy would be a great flaw. It could also be an excellent edge for a character that is being played as a mercenary or one who is coming up fast through the ranks - what do I care if I step over your grave, better you on the edge of my sword than me on yours.
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<ul>
<li><a href="http://ghlbeyerlein.tripod.com"> My web site</a>
<li> <a href="http://stations.mp3s.com/stations/358/grutos_metallipage.html">My MetalliStation</a>
<li><a href="http://www.grid.org/projects/cancer/"> United Device's distributive computing Cancer Research Project</a>
<li><a href="http://www.firstgov.gov">FirstGov.gov</a>
<li><a href="http://www.tsa.gov/public/index.jsp">TSA.gov</a>
<li><a href="http://www.whitehouse.gov/homeland/">Homeland Security</a>