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[Marcus Allen]

Here’s where the physics actually matters in practice, and it’s the static-vs-kinetic distinction that most people get wrong. Static friction (μₛ) is what you fight when initiating a movement from rest—critical for those precise micro-adjustments and starting your flick at exactly the right pixel. Kinetic/dynamic friction (μₖ) is what governs the glide once the cursor is already moving, which controls how far you overshoot and how cleanly the flick decelerates. The key insight is that μₛ is always higher than μₖ, which is exactly why a good

"Lag isn’t an excuse, but it definitely wasn’t my fault."

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