How Can Math Protect Our Data?

Error-correcting codes protect digital data from corruption during transmission or storage. Stanford's Mary Wootters explains how these mathematical safeguards use strategic redundancy to detect and fix errors caused by various interferences. Unlike simple repetition, modern codes efficiently ensure data integrity with minimal overhead. These invisible guardians are embedded in virtually all digital systems, from scratch-resistant CDs to cell phone communications, and may even apply to future quantum computing and DNA-based storage technologies.