Over time, it became a metaphor for informal but effective methods. While not exact, rules of thumb are valuable for decision-making in everyday life.

Duckling

Nino Nakano (The Quintessential Quintuplets)

High mountains, forests, trees, small streams, rain, wildflowers, wild grasses, depth of field, tenacious life, award-winning photos, real, photo, wallpapers, ultra-high definition, high details, 16K

3D animation style. A cute cat standing upright like a human, with arms and legs open wide. It has a smile on its face and eyes wide open. The cat is wearing clothes. The background is blurry.

Cartoon, cat sitting on a grave in a graveyard at night

[SUBJECT], vintage Akira manga poster

Feline animal painting in the style of Jean Jullien

A solved Rubik's cube being dropped to stop a timer, cartoonized

A character design sheet of an anime, male lifeguard with short, sun-bleached hair, wearing sunglasses and a red lifeguard outfit, in different poses, front view, side view, and back view, red pencil sketch on a white background, concept drawing, simple lines, flat colors, hand-drawn style with simple lines on a white background, character concept art, mesh base.