Reading last weekend’s Wall Street Journal review of “The Forever Fix: Gene Therapy and the Boy Who Saved It” I was struck by an anecdote. It’s about an interview the reviewer did with a scientist who works in the field of neuroprostheses, and that scientist’s refusal to talk about the possible practical applications of his work, because, he said, “false hope is a sinful thing.” Really? To me, it seems like an inevitable part of hope is that it might be false. To illustrate, I don’t hope that my neighbors will be nice to me, because it’s a sure thing....