Repurposing, which is what it's called, is pretty exciting. Again, when you think about diseases that have shared mechanisms, it's good. We must be cautious, though. The well is not that rich in medicines. We have medicines to very few pathways. Those that happen to work will be cost-effective for the health care system, but the track record for repurposing medicines is poor, and not because it's not a great idea; it's just that biology is complicated and we don't really understand it.
We have to balance between inventing new things and trying to extract the value of what already exists. Both are good ideas. You just have to be cautious. It's not going to be the panacea.