It depends on if your question is about legality, morality, social stability, privilege of some sort, or perhaps something else.
If someone offered to cure cancer, but only if you permitted them to commit a single specific murder, is that a reasonable trade? All you've got there is yet another trolley problem.
If someone offered to cure cancer, but only if you permitted them to commit a single specific murder, is that a reasonable trade? All you've got there is yet another trolley problem.