tbf, being in a dark room with no flashlight will give you lots of undistracted free time to work through complex problems and ideas. The presence of a cat in there with you is largely irrelevant.
I work in an underground mine and sometimes when I'm waiting for someone to come pick me up, I torn my cap lamp off and sit on a rock. It's the darkest dark you can imagine. No shadows, no pin pricks of light just your thoughts. All you can hear is the sound of moving air and the occasionally the rock moving.
It's genuinely peaceful and so so relaxing. Definitely had some philosophical moments down there