, ▁incred ibly ▁powerful ▁sent ient ▁sword , ▁w ield ed ▁by ▁V ash er . ▁ ▁Major ▁them es ▁According ▁to ▁Sand erson , ▁" W ar bre aker ' s ▁sub structure ▁is ▁that ▁of ▁revers als ." ▁ ▁In ▁the ▁early ▁chap ters ▁Sand erson ▁begins ▁to ▁show ▁a ▁swap ▁in ▁the ▁roles ▁and ▁att itudes ▁of ▁the ▁main ▁characters ▁Si ri ▁and ▁V iven na . ▁Through ▁the ▁contrast ▁between ▁the ▁Hall and ren ▁and ▁Id rian ▁civil izations , ▁a ▁few ▁major ▁them es ▁are ▁displayed . ▁One ▁is ▁the ▁misunder stand ings ▁that ▁can ▁occur ▁between ▁two ▁cult ures , ▁and ▁the ▁bi ases ▁that ▁can ▁result ▁from ▁these . ▁This ▁is ▁in ▁part ▁shown ▁by ▁the ▁mist re at ment ▁of ▁Id rian ▁workers , ▁who ▁are ▁thought ▁to ▁be ▁b oring , ▁un tr ust worth y , ▁and ▁stuff y . ▁Another ▁is ▁how ▁two ▁cult ures ▁may ▁interpret ▁history ▁differently — the ▁Hall andr ens ▁think ▁of ▁the ▁Id ri ans ▁as ▁reb els , ▁while ▁the ▁Id ri ans ▁think ▁of ▁themselves ▁as ▁the ▁right ful ▁r ul ers . ▁ ▁Re ception ▁Or son ▁Scott ▁Card ▁said ▁that ▁he ▁initially ▁found ▁some ▁aspects ▁of ▁the ▁magic ▁system ▁disappoint ing ▁because ▁he ▁felt ▁it ▁was ▁too ▁far - fetch ed ▁to ▁obtain ▁mag ical ▁power ▁from ▁color . ▁He ▁did ▁not ▁mind ▁it ▁as ▁much ▁when ▁it ▁turned ▁out ▁that ▁the ▁dra ining ▁of ▁color ▁was ▁a ▁sympt om ▁of ▁magic ▁use