"You can generate an immutable and accurate proof of existence and integrity for any document.
Since long before Galileo theorized that the world was round, there have been cranky old guys arguing that the person bringing change is the radical, citing everything from tradition to Divine immutable law as proof of their own superior wisdom.
The use of cryptocurrency in this form combines what software companies have traditionally used for proof of purchase with immutable tokens.
Notice though that once one has eliminated the contraction and weakening rule, formulas no longer behave as immutable truth values: indeed, when we have a proof of A ⇒ B and a proof of A in linear logic, by composing them we actually consume them to get a proof of B, so that A ⇒ B and A are no longer available after the composition.
Nicolson's book is, perhaps unintentionally, a proof that the word of God is not immutable.
But doesn't promoting a biological explanation for gender difference, whether or not there's solid proof for it, make the division seem more immutable than it necessarily is? Tellingly, Kreamer found no difference between men and women in a second survey she designed to measure how individual work style lines up with how people cope with stress.
One of the four criteria for defining a classification such as sexual orientation as suspect — which in turn subjects laws targeting that class of people to the highest burden of proof — is that the group in question share an immutable characteristic.
That Stéphane Sessègnon should have scored the opening goal that hastened his former manager at Sunderland, Paolo Di Canio, to defeat was proof of what the football writer, Brian Glanville, would call the "immutable law of the ex".
Since the anti-segregation cases of the late 1950's, courts have generally required proof that a person was being denied the law's equal protection because of an immutable trait, one that was inborn or could not be changed.
