The recovery had taken a while. Chet had gotten most of his brain functions back. He had not lost any of his wits, unless discretion and social skills could be so designated, so he had devoted a lot of attention to the question of why the transit-brandishing pencilnecks who had laid out the section lines a hundred years ago had been so particular about sticking to a grid pattern and yet had perversely inserted these occasional sideways jogs into the grid. Examining maps, he noticed that the jogs only occurred in north-south roads, never east-west.