There was a wonderfully illustrative story which I thought I had bookmarked, but couldn't re-find: it was the story of a man whose know-it-all neighbor had once claimed in passing that the best way to remove a chimney from your house was to knock out the fireplace, wait for the bricks to drop down one level, knock out those bricks, and repeat until the chimney was gone. Years later, when the man wanted to remove his own chimney, this cached thought was lurking, waiting to pounce...
As the man noted afterward - you can guess it didn't go well - his nei