It was George Eliot who remarked that of all human error, prophecy was the most unnecessary, but it is also the most persistent.
乔治·艾略特曾指出在人类所有的缺点，预言是最无必要、但也是最根深蒂固的。
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An optimal subband rate allocation algorithm in mean-squared error (MSE) minimization sense was proposed, which achieves persistent optimal rate-distortion performance under any given rate constrains.
That is, unless otherwise indicated, the client SHOULD assume that the server will maintain a persistent connection, even after error responses the server.