Oh, the perils of posting - and discovering that the posts are actually read.On Tuesday, I wrote about a friend and book collector who was considering tapping into his retirement savings to buy highly desired rare books. I feared for his sanity - and that’s not all: I privately extended an invitation to him to sleep on my couch after his wife found out about the plan.After posting the article, This Is Your Brain On Books, and alerting him to temporary room and boarding availability when his wife kicks him to the curb, I received the following response from him:“My...