The statement is only generates a contradiction if there is an omniscient being. If there are no omniscient beings, it is consistent.
The idea is that it is impossible for a being to both know and not know something. Knowable is not the same as known to a particular being
Or we could abolish the employer-employee contract and mandate that all firms be worker coops, so that no one could appropriate the positive and negative fruits of other people's labor
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