Courtesy or Avoidance?

The Watchtower in their Nov. 2006 issue of Our Kingdom Ministry states a JW's job isn't to refute every doctrine (they perceive to be false) that someone may express, but to just declare their good news of God's Kingdom and they cite Matthew 24:14.

It is likely the real intention is for the witness not to consider anything that would clearly contradict their organization's current teaching. That way, any exposure to biblical truth will be minimized or serious examination of their beliefs will less likely take place.

The impression a JW may have after reading the article is that if anyone challenges their faith, then they are not held responsible to give a defense. While we should be charitable to others if they express different viewpoints, the article's somewhat vagueness makes it sound like 'hit and run' presentations are recommended by the Society. However, if civility remains, why not discuss an issue then? Does the great commission prohibit us from dealing with questions we may be asked?

1 Peter 3:15 But in your hearts set apart Christ as Lord. Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect