How is that relevant? Does Alice being blind for another reason make it less important for Bob to be able to see?
If you cured everyone with cataracts, and all of the other cheap stuff, then it might be worth while to do something more expensive. But this is only because doing something cheap is no longer an option.
How is that relevant? Does Alice being blind for another reason make it less important for Bob to be able to see?
If you cured everyone with cataracts, and all of the other cheap stuff, then it might be worth while to do something more expensive. But this is only because doing something cheap is no longer an option.