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An oral contract of apprenticeship, although legally valid, is unenforceable unless and until acted upon.
Many positive rights are unenforceable by courts.
As was obvious from the outset, the treaty obligation is proving unenforceable .
When a mere game has unenforceable rules, you can just change the rules with no great loss to your honour.
But the decision is that these promises are invalid and unenforceable .
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