If one accepts the prerequisite of a default rule, and the justification is consistent with all one knows (including what one knows on the basis of the default rules themselves), then one is entitled to accept the consequent.
Special rules (called default rules by Reiter) permit drawing certain conclusions so long as these conclusions are consistent with what one knows, including all that one knows on the basis of these very default rules.
In the end, two thousand of the four thousand applicants received visas; no one knows on what basis.
In this sense, Brexit, with its foreboding of irreversibility (although who knows on that one), has brought people into a confrontation with self, with helplessness.
"But 'risk' is completely subjective," she said, "and when you have flight attendants and crews from different backgrounds and cultures you get a different set of rules that no one knows on every flight".
When Weston encounters Mrs McNamara, a middle-aged woman suffering from mouth cancer, she knows on the one hand that "the cancer colonising this woman's mouth must be unbearably painful".
But precisely because no one knows on what basis Kennedy would decide, Roberts could step in to make sure it's clear and narrow.
As every aging mousekeeter knows, on the Mickey Mouse Club one day a week was Anything Can Happen Day.
Two days later, one of these men – who knows on what grounds, exactly – was "let go" from his job.
Who knows on London's Brompton Road?
"What he knows, he knows on a cellular level".
