I confess my comment was motivated by seeing something where it looked like I could make a quick “gotcha” point, which is a bad way to converse.
Reading the original comment more carefully, I’m seeing how I disagree with it. It says (emphasis mine)
in practice the problems of infinite ethics are more likely to be solved at the level of maths, as opposed on the level of ethics and thinking about what this means for actual decisions.
I highly doubt this problem will be solved purely on the level of math, and expect it will involve more work on the level of ethics than on the level of foundations of mathematics. However, I think taking an overly realist view on the conventions mathematicians have chosen for dealing with infinities is an impediment to thinking about these issues, and studying alternative foundations is helpful to ward against that. The problems of infinite ethics, especially for uncountable infinities, seem to especially rely on such realism. I do expect a solution to such issues, to the extent it is mathematical at all, could be formalized in ZFC. The central thing I liked about the comment is the call to rethink the relationship of math and mathematical infinity to reality, and that doesn’t necessary require changing our foundations, just changing our attitude towards them.
On further thought I want to walk back a bit:
I confess my comment was motivated by seeing something where it looked like I could make a quick “gotcha” point, which is a bad way to converse.
Reading the original comment more carefully, I’m seeing how I disagree with it. It says (emphasis mine)
I highly doubt this problem will be solved purely on the level of math, and expect it will involve more work on the level of ethics than on the level of foundations of mathematics. However, I think taking an overly realist view on the conventions mathematicians have chosen for dealing with infinities is an impediment to thinking about these issues, and studying alternative foundations is helpful to ward against that. The problems of infinite ethics, especially for uncountable infinities, seem to especially rely on such realism. I do expect a solution to such issues, to the extent it is mathematical at all, could be formalized in ZFC. The central thing I liked about the comment is the call to rethink the relationship of math and mathematical infinity to reality, and that doesn’t necessary require changing our foundations, just changing our attitude towards them.