…that’s not what secondary sex characteristic means. As the article you linked says, that just means physical characteristics unrelated to the reproductive system that differ between the sexes. Some of the other examples given include the Adam’s apple in men and longer arms relative to height in women. While some of these things can be sexually attractive or related to sexual attractiveness in some way, certainly we don’t societally put them in the same sexual category as women’s breasts.

Literally manual, nice

I see this a lot in car-dependent cities… the street entrance is closed and you have to go through the parking lot, which just sucks especially if the neighborhood is otherwise walkable.

Donate to his own foundation which he controls

Just use a 360 degree camera with stabilization

https://reddit.com/r/highschool/comments/1j2wjhg/school_recently_banned_phones_and_these_are_the/

https://reddit.com/r/highschool/comments/1j4cnqk/students_asked_more_questions_about_the_phone_ban/

This is the brutalism we want

The way mantis shrimp see is nonetheless super cool and interesting. They likely have no conception of 2D color at all, and can only sense the 12 different colors in general. Furthermore, only the midband of their eyes see color, when the eyes are moving and scanning for prey, they don’t see color at all, which probably helps offload mental load for their small brains. Once they do see something, they then stop moving their eyes to determine the color of what they’re looking at.

Also, mantis shrimp have 6 more photoreceptors in addition to the 12 colored ones, to detect polarized light. They likely see them the same way that they see color, so they probably don’t consider them anything different than wavelength which is what we interpret as color.

Ed Yong’s An Immense World has a section on this and I’d highly recommend it. The ways animals sense and perceive the world are often so different for ours and it’s so fascinating.