STEM Skill Tree Level 3
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@marinhacks_stem
A `for` loop is the slow scroll. `.filter()` and `.reduce()` are the swipe — describe what you want, not how to walk the list.
Quick challenge: Keep only the reels you actually learned from (score ≥ 50), then total their minutes.
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Bonus check
What is the second argument to `.reduce()`?
@marinhacks_stem
Force is just how hard you push mass to make it accelerate. A 10 kg mass in free fall — how many Newtons?
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@marinhacks_stem
Each Fibonacci number is the sum of the two before it. Recursion lets a function call itself to build the sequence.
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@marinhacks_stem
Naive fib(30) makes ~2.7 million calls. Cache each answer the first time you compute it and that collapses to 30.
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@marinhacks_stem
Every half-life, exactly half the sample is gone. That's not subtraction — it's repeated halving, which means exponents.
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@marinhacks_stem
Transcription rewrites DNA into RNA one base at a time: A→U, T→A, C→G, G→C. That's a map over a sequence.
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