He forgot one other great thing. They could connect drains to the pipe. If there ever a lot of rain or snow melt, the excess water would go in the drains instead of flooding peoples homes. Just put one every 100 yards or so all over the country. no more floods ever. while they are at it, put sprinkler systems in every yard and pivots on every farm. no need for rain dances , F(#K, i was channeling a dummie for a minute. Sorry