The death of an idea can hurt just as badly as the death of a person. People are mortal, after all, and come with an expiration date – it’s the cost of doing business with them. But ideas often have a wider impact than any one person. They’re passed down and passed around, like heirlooms or viruses. It’s easy to convince ourselves that an idea that gives our life meaning will outlast our life, any life, in turn. To lose an idea like that leaves us adrift, with no shore in sight.