OK, it’s not such a huge secret. Aspiring writers are told to “kill their darlings”; that is, to not get too attached to clever turns of phrase that don’t fit with the rest of the piece any more. A business has to be prepared to do the same, because today’s breakthrough innovation will inevitably become tomorrow’s dinosaur. A Business Design that is successful now isn’t likely to survive the next market disruption if you’re not prepared to pivot. Just ask BlackBerry.