String Immutability and the print() Function
If a string can't be changed in place, how do you 'edit' one — and what makes `print()` different from just peeking at a value?
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Feynman technique
Learn with the Feynman Technique
Explain each idea in your own words in handwriting, then upload a photo for AI critique. Two attempts per question — there's no "right" answer, only depth of understanding.