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Needed for "be conservative in what you send"
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Only solution to deal with opaque data
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Not all parts of the WWW may reasonably be expected to do normalization (small
devices,...)
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Less need for software updates to address forward-compatibility issues
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More efficient implementations for string indexing (see below)
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Increasingly difficult to hide implementation details anyway
Problem: Early normalization has to be uniform across the WWW. This requires
aditional specifications.