In practice, you basically get one-bit error correction 'for free' when you have enough redundancy to detect two-bit soft errors. Simple parity can only detect one bit flip, so if you want to catch two-bit errors, you might as well correct one-bit errors you find on your way at no extra cost.
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In practice, you basically get one-bit error correction 'for free' when you have enough redundancy to detect two-bit soft errors. Simple parity can only detect one bit flip, so if you want to catch two-bit errors, you might as well correct one-bit errors you find on your way at no extra cost.