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A batch of the best highlights from what Louis's read, .

Yet when you are called stupid, it makes you angry. Because something within you entertains the possibility that you might, in fact, be. Then something else within you grows irritated by the idea that you might be. This internal conflict manifests itself as anger.

Direct Truth - Uncompromising, Non-Prescriptive Truths to the Enduring Questions of Life

Kapil Gupta

In physics, the reciprocal lattice represents the Fourier transform of another lattice (usually a Bravais lattice). In normal usage, the initial lattice (whose transform is represented by the reciprocal lattice) is usually a periodic spatial function in real-space and is also known as the direct lattice. While the direct lattice exists in real-space and is what one would commonly understand as a physical lattice (e.g., a lattice of a crystal), the reciprocal lattice exists in reciprocal space (also known as momentum space or less commonly as K-space, due to the relationship between the Pontryagin duals momentum and position)

Reciprocal Lattice - Wikipedia

primitive vectors

Human and animal foragers are constantly prioritizing and making effort-allocation decisions, even if only unconsciously. They concentrate first on favorite foods, or ones that yield the highest payoff. If these are unavailable, they shift to less and less preferred foods.

Jared M. Diamond - Guns, Germs and Steel

1999, W. W. Norton & Company

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