How Gravity Functions: From Newton to Einstein's Spacetime
How does CRISPR actually edit genes? Understand the science of genetic engineering.
The exact change
Title read "How Gravity Functions: From Newton to Einstein's Spacetime" but the article body was entirely about spaced repetition: "...Hermann Ebbinghaus's forgetting curve... the SM-2 algorithm underlying Anki... Cepeda et al.'s meta-analysis of optimal spacing intervals... modern FSRS scheduling..." with no mention of Newton, gravity, relativity, or Einstein anywhere in the body.
Title now reads "How Genetic Engineering Works: CRISPR and Gene Therapy Explained" and the body genuinely covers genetic engineering: "...restriction enzymes enabled Boyer and Cohen's 1973 recombinant DNA... Jinek, Chylinski, Fonfara, Hauer, Doudna and Charpentier's 2012 Science paper described the CRISPR-Cas9 mechanism... Casgevy became the first CRISPR-based therapy approved by the FDA, on December 8, 2023, for sickle cell disease..."
Suggested change
Replaced the title, meta_title, and entire article body with original, verified content on how genetic engineering works: restriction enzymes and recombinant DNA (Boyer and Cohen 1973), PCR (Mullis 1983), the CRISPR-Cas9 mechanism (Doudna and Charpentier, 2020 Nobel Prize), approved gene therapies through Casgevy's December 2023 FDA approval, somatic vs germline editing, and base/prime editing. Slug, excerpt, meta_description, tags, and FAQ were left unchanged as they were already correct.
Why this is better
A content-management bug resulted in an unrelated spaced-repetition/forgetting-curve article being published under this page's title and URL, even though the slug, excerpt, meta_description, tags, and FAQ were already genuinely and correctly about genetic engineering. The wrong title and body were replaced with original, verified CRISPR/gene-therapy content. This supersedes the SUPERSEDED note left on contribution 561 (a minor citation fix that lived inside the old misplaced spaced-repetition text and no longer appears on the page); this new contribution documents the full content-swap correction itself. Verified live: the page title and body now match its slug and topic.
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