Sketchplanations
Big Ideas Little Pictures

Sketchplanations in a book! I think you'll love Big Ideas Little Pictures

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Explaining the world one sketch at a time

Addiction: an alternative definition

Made me think about it in a different way when I read this. An increasing or compulsive tendency to avoid pain or boredom and replace inner development with outer stimulation. — Felicitas Vogt Source: Simplicity Parenting by Kim John Payne, p.151
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The moon illusion - psychology and causes still debated

The moon illusion

You may have noticed that sometimes, when the moon rises over the horizon, it seems unusually large. On several occasions, I've stopped to wonder at it shining behind the skyline—it's always a treat. However, if you stay awake long enough, you might see that later in the night, once the moon has risen higher in the sky, it has reverted to its expected size. This apparent change in size is known as the moon illusion. Great minds from Aristotle to Isaac Newton have wondered at its cause, and I was surprised to learn that its cause is still debated. The most accepted explanations suggest the illusion arises from comparing the moon as it passes the horizon with known objects, such as buildings and trees, that provide a sense of scale. Higher in the sky, we can only compare the moon to the vastness of space and the sheer size of the sky itself. To experience the full grandeur of the moon illusion, try a telephoto lens with the moon rising next to a cityscape. Related Ideas to the Moon Illusion Also see: The ring-segment illusion The impossible staircase The frequency illusion Phases of the moon Super moon The Chinese Zodiac I updated this sketch for my book Big Ideas Little Pictures (here's the original)
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Common button states

I still find somewhat remarkable the complexity in a simple button on the web. These are just 6 common states that may each have their own appearance and behaviour.
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