Paradise lost -- for Jehovah's Witnesses (3) Isaiah 2 misapplied by Watchtower

The prophet Isaiah is the principal Bible book plundered for the Watchtower's unique "good news" -- paradise earth for Christians. The misapplication of Isaiah begins with failure to observe basic rules of Bible interpretation: 1/ To whom was this text written? 2/ What would that original audience understand this text to mean? 3/ Are there any clues in the context of the text which might indicate your interpretation is a misapplication?