My assertion is that many, if not most, people would save the human despite viewing the two lives as equally valuable. You propose that this is a contradiction. I'm currently explaining to you why it isn't.
Yes, but your mansplanation involves changing my thought experiment to one where other factors exist.
Choose between your mum or someone who irritates you.
Choose between someone terrible (he is) and a cute kitten.
You could do that endlessly. Do you save a child or an elderly person who has had a long and rich life?
Do you save Jimmy Saville or Lassie?
Do you save an ant or a dog?
My thought experiment was deliberately intended to strip away all that and get my friend to think about whether they really view human and animal life as equivalent.
It is possible, and indeed likely, to devise a situation in which two things have the same value, and yet one is reliably chosen.
Yes. But as I've said you were talking about monetary value, which is a fairly reasonable approximation for value of objects, I guess. Valuation of life is more abstract. And you deliberately set up the situation where my need for one of those things was greater than the other. Again, I want to strip away all that.
Many societies still kill humans they perceive as a threat to society at large, and most did until relatively recently.
In very extreme circumstances and after a due process. We don't just put them down because they're ill or kill them because we want to eat them.
The reasons Dignitas is controversial are extremely well-documented, and you haven't read them. One of the obvious ones is the fear of unscrupulous people pressuring the elderly and vulnerable into committing suicide. In other words, the controversy mostly surrounds the concept of consent, and not the value of life.
There is something in that, but the value of human life is a factor too. There's debate about whether someone should have the right to even decide this. Probably because of us being a Christian country back in the day, I'm pretty sure suicide was illegal at one point because the view was that human life was sacred and shouldn't be extinguished, even by your own hand.
Because we are no longer a Christian country in any meaningful sense the attitudes are changing about whether we should have the right to decide this (I can see arguments both ways, this is another one of those subjects which people on both sides pretend is simple when I actually think it's really complex)
Just generally pretty much everyone has a hierarchy of value they place on different species, with us at the top.
You have yet to demonstrate that.
I don't know how to "demonstrate" it. Can you demonstrate that most people view human and animal life of equal value as you have asserted?
I infer my view from my experience of life. As I said, I'll kill ants with impunity. Bastard things. "Higher" life forms I would be less willing to kill even if they were pests who I didn't want in my house. I'm talking there about my attitudes. But while his is not a topic I discuss regularly with people, I've not done a survey, I don't remember anyone calling me a monster for killing ants. I do see people who are cruel to dogs or cats vilified - remember that cat bin lady. Sheesh, she didn't even really hurt the cat but that was headline news. I Googled it and she was fined £250, had she assaulted a human she would have been charged with a more serious offence.
There are certain Buddhist monks who I think believe that all life is equivalent and don't kill ants, outside of that most people don't regard all life as equivalent.
EDIT: Found this:
https://www.psychnewsdaily.com/children-value-100-dogs-more-than-one-human-adults-value-1-human-more-than-100-dogs-suggesting-our-speciesism-is-learned/I suspect I'm in the minority there) and most likely wanted to spare herself the headache of someone restating the same non-point over and over while ignoring all arguments against his pre-conceived conclusion.
I'm not ignoring you, I wouldn't have ignored her. I've responded to your points
Also, interestingly: I just told you that I view the question as unanswerable, and you inferred something else entirely from it.
I took that to mean you couldn't choose. You have stated you view animal and human life as equivalent. I took that answer as an affirmation of that. If I'm misunderstood then you're free to clarify.
If you read the news, you won't go a day without reading several stories about the wealthy/powerful egregiously ignoring laws and sufferring little to no consequences.
They may be more immune to the consequences because of their wealth and power, but that doesn't mean they're not subject to the same laws.