Imagine you were planning a trek across Death Valley. Would you be better off setting out on foot with just a bottle of water in your hand, or in a vehicle loaded with supplies and a full tank of gas? That’s one of the metaphors Leon Sandler uses to describe the work of the Deshpande Center for Technological Innovation — giving MIT researchers and aspiring entrepreneurs the tools they need to successfully spin out their technologies and have an impact on the greater world. As executive director of the center, Sandler…