The Locked Brain on Instagram: "The post shares a 22-second educational video demonstrating how surgical lights function in an operating room, captioned "Surgical Lights doesn't create any shadow" to emphasize the specialized engineering that allows surgeons to work without visual obstruction. Garnering 1.2M likes and 9.8M views within the first five days, it taps into the "how it works" and medical technology niches, where viewers express fascination with the complex physics of parabolic reflec