#
# 1. A robot may not injure a human being or, through inaction, allow a human
#    being to come to harm.
#
# 2. A robot must obey any orders given to it by human beings, except where
#    such orders would conflict with the First Law.
#
# 3. A robot must protect its own existence as long as such protection does
#    not conflict with the First or Second Law.
#