timelets

But by the time people became concerned about... about students, by the time they came to consider just how you were reared, whether you should have been brought into existence at all, well by then it was too late. There was no way to reverse the process. How can you ask a world that has come to regard cancer as curable, how can you ask such a world to put away that cure, to go back to the dark days? There was no going back. However uncomfortable people were about your existence, their overwhelming concern was that their own children, their spouses, their parents, their friends, did not die from cancer, motor neurone disease, heart disease.

--- Kazuo Ishiguro. Never Let Me Go.