You may have run across Thomas Nagel via his What is it like to be a bat?
https://duckduckgo.com/?q=nagle+%22to+be+a+bat%22&t=fpas&ia=...
https://en.m.wikipedia.org/wiki/What_Is_It_Like_to_Be_a_Bat%...
> Nagel famously asserts that "an organism has conscious mental states if and only if there is something that it is like to be that organism—something it is like for the organism."[2] This assertion has achieved special status in consciousness studies as "the standard 'what it's like' locution."[3] Daniel Dennett, while sharply disagreeing on some points, acknowledged Nagel's paper as "the most widely cited and influential thought experiment about consciousness."