I think that there are a multitude of questions to address, in terms of biological science. As I just said, the brain is still almost a complete mystery. We don’t know about the neural circuits that control even innate drives such as hunger, sleep. We don’t know how those things work. We know that they’re controlled by circuits of neurons. That is, they’re interconnected neural networks, but we don’t know what they are. We don’t know what the genes are. There are now very large-scale efforts to map genes that are expressed in the brain. And once you can map the genes, that is, determine the neurons that they’re expressed in, you can couple that with genetic alterations in animals to study what happens when you turn a gene on or turn it off, and in that way you can learn more about the roles of individual neurons in the neural circuit. Now, in the case of smell, we’re very interested in how it is that smells can elicit specific kinds of behaviors. Predator odors can elicit an instinctive fear response. We think that we can use odors or pheromones that also elicit specific innate responses to gain access to those neural circuits that have not been identified yet. And once we can get our hands on one identifiable set of neurons in the brain that’s involved in that circuit, then we can move outward from that, and start identifying the other neurons, and then establish what individual neurons in the circuit do. So we’ve just begun to do that recently, actually.