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.

A vast universe with no end in sight.

Train

Happy, rich colors, lively movements, exaggerated movements, a cute cartoon girl with baby bunny ears on her head, wearing yellow clothes and a pink skirt, holding an adorable cat-shaped bag, in a standing pose, with a simple flat illustration style, vibrant colors, isolated against a solid color background. The sticker art in the background includes items like M&M's, soap bubbles, a Barbie doll, sunglasses, and a lollipop.

A stunning 3D conceptual art piece showcasing magnified DNA molecules, as seen through an electron microscope. The intricate double helix structure of the DNA is rendered in vibrant colors, with the individual base pairs illuminated to emphasize their unique shapes. The overall composition is set against a dark background, allowing the DNA molecules to stand out and captivate the viewer's attention.

In the style of El Lissitzky, a cybernetic cityscape teeming with artificial life

Hiker, in the style of minimalist illustrator, reinterpreted human form, iconic album covers, white and violet, stop-motion animation, elongated forms, flat illustrations

Minimalism, artistic conception, ink painting, a scholar, silhouette, standing on a mountain of stacked books, two mountains, Zhang Daqian style, modern art graphic illustration, perspective aesthetics, light green, soft gradient colors, ancient Chinese minimalist painting, figure, transparent background, depth of field, high definition, high resolution, ultra-high detail

Lotus pond photography, upward angle, lotus leaves, water surface, duckweed, blue sky, high saturation, natural light, fresh green, vitality, 32K

Colorful and bright, illustration, minimalist, cream style, a line drawing of a stylishly dressed cat with a simple background, 32k ultra high definition