What ethics should guide the use of robots in policing

In "tell me, o swan, your ancient tale," to what does the land where no doubt nor sorrow have rule refer? nature heaven the promised land an imaginary country

How is president obama using an appeal to reason, or logos, in this excerpt? by explaining why each person must work hard in order to succeed by explaining why working together is necessary for success by explaining why attempts at working together in the past failed by explaining why each person must look out for him or her self

"night. no one was praying for the night to pass quickly. the stars were but sparks of the immense conflagration that was consuming us. were this conflagration to be extinguished one day, nothing would be left in the sky but extinct stars and unseeing eyes." explain the images included in the passage. how is the use of the image of night contradictory to how we might expect it to be used