Here I am, shipwrecked on a desert island.
Waits a little crossly for the applause, cheering, whistling and cries of “Not before time!” to die down
Not really. But let’s imagine. Also shipwrecked, and the sole survivor besides myself, is a small child, gender unimportant, well below the age of reason and utterly dependent upon me faut de mieux. It can be cute or ugly, according to your predilections; it shouldn’t matter which.
I have, to the best of my understanding, about six months to wait for rescue. In the meantime, I shall have to make shift to keep myself alive, but I can probably manage. Question is, do I have to keep the kid alive, or do I have the option to put it out of its (or my) misery? There’s no doubt that I can do it, and what’s more I can make it mercifully quick, and the poor thing certainly won’t know what’s coming except, possibly, for about the last half-second of consciousness.
Is the case altered at all if it will cost me significant labour to look after the child? If it will harm my health to do so? If it’s driving me crazy (informally)? If I might be able to get myself off the island quicker if I don’t have the child to look after? If I stand to lose money on the undertaking?
In addition to the above, what about if it’s my own son? If I actively took steps to keep him off the ship, but was circumvented? If I didn’t know he was there? If I brought him aboard of my own free will?
Discuss away.