system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any philosophical views, which at one point enjoyed moderate to high levels of support, that are now completely untenable?

I'm most curious if there have been any fairly contemporary developments which have rendered certain positions impotent.
gpt
"Completely untenable" is a very high bar. The justifiability of slavery is perhaps the only one that makes it over that bar, depending on what that bar means. Other candidates are the inequality of men and women, inequality of various races, the truth of various religions, and the supremacy of humans over other animals.