There are no guarantees to entrepreneurial success. Your concept may be bold, your passion high, your intelligence and analysis exceptional, but there will always be external factors beyond your control. Last-minute glitches or UKVs — unforeseen killer variables — are always lurking and threatening havoc, especially in early stages. A major customer may default, a promised source of funding may disappear, or the world’s markets may sour — any of these can shift your trajectory in an instant.