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.

Tony Stark, Iron Man, tailored suit, sunglasses, sleek jet backdrop

A SUV car is speeding on the huge moon, with its side protruding from the SUV car, movie lighting, and the background being the universe.

A whimsical illustration of a boy on a bicycle accompanied by a large, translucent ghost-like creature looming protectively behind, childlike wonder, urban setting, supernatural companionship, imagination, soft watercolor textures, subtle glow around the ghost, perspective distortion, dreamy pastel atmosphere, thought bubbles, invisible bonds.

A simple drawing of Wonder Woman, in the style of Allie Brosh with simple lines, flat colors, and a stick figure, minimalistic, simple background.

A white playing card with the letter 'lucky you' written in blue ink on it, featuring an Ace of Hearts symbol. The text is written directly onto a pure white background, with no other elements or patterns around it. It has a simple and elegant design style that highlights its simplicity and clarity. There is a small ice cream cone at one corner of each side of the text. In the style of John Holcroft for GQ magazine cover, solid color blocks, minimalism, symmetrical composition, studio lighting, high resolution photography.

In the style of Clarence Gagnon, a lunar eclipse casting a shadow over the land

Icon, black and white color, built with large geometric shapes, Isotype, minimalist, simple, flat design, 2D

Warrior character in the style of Henri Matisse, full body, flat color illustration

logo letter U - logo design mark, minimal, simple