Why are you complaining about this? This is exactly how other software works as well. Earlier versions of most applications cannot open a later version's file because the later version contains features that do not exist in the earlier version. But with Office you can always convert your file from a later version to an earlier one which is very easy to do.
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Why are you complaining about this? This is exactly how other software works as well. Earlier versions of most applications cannot open a later version's file because the later version contains features that do not exist in the earlier version. But with Office you can always convert your file from a later version to an earlier one which is very easy to do.