In Slaughter house five it was interesting because it was in the WW2 and it was breath taking. In Flatland's my mind was gonna explode because it was too much for me but at least survived it. Whats makes it the most interesting that they are the same is that the Flatland's were talking about dimensions and the Slaughter House Five was that Billy Pilgrim was abducted by four dimension aliens and so what makes them the same were that they talking about dimensions!