Why is "fixed-length" chunking often insufficient? How would you handle a document where a single sentence contains a critical fact but spans a chunk boundary?

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Fixed-length chunks can cut a sentence in half, losing context. Recursive Character Splitting (splitting by paragraphs, then sentences, then words) ensures semantic units stay together. You can also use "overlap" (e.g., 10-20%) so the end of Chunk A appears at the start of Chunk B.

Why is "fixed-length" chunking often insufficient? How would you handle a document where a single sentence contains a critical fact but spans a chunk boundary?

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