POLA: Principle of least astonishment. When something behaves in a way which transcends the concept of not only "non-intuitive", but "counter-intuitive", by doing something that could be only more out of phase if it were also rotated 90 degrees on the Z axis, as it were, it is said to "violate the POLA". An example would be a backup program which, when restoring selected files, deleted everything else in the directory which was not on the restore list. Not that I'd know anything about that happening, of course, nor that duplicity would do such a thing when instructed to restore some files in place...

                                --*greywolf;

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