If you force every foot into a size-eight shoe, you do not achieve "equality"; you achieve a room full of people who cannot walk. This is the central peril of the principle of generality. While abstract rules provide a skeleton for order, a skeleton without the "flesh" of human discretion is a brittle, lifeless thing. To truly govern a world of mess and nuance, the law must learn to bend without breaking.
## The Lesbian Rule: Aristotle and the Grace of Equity
Aristotle recognized that the "majestic equality" of general rules often produces a specific kind of cruelty. In his *Nicomachean Ethics*, he proposed that justice requires **Equity** (*epieikeia*)—a corrective mechanism for when the law’s universality fails.
Aristotle famously illustrated this with the "Lesbian rule," a flexible lead measuring strip used by builders on the island of Lesbos. Just as a lead rule bends to fit the curves of a stone wall, equity bends the rigid letter of the law to fit the unique "contour" of a human life.
> "For when the thing is indefinite which the rule has to measure, the rule also is indefinite... the rule adapts itself to the shape of the stone and is not rigid."
> — Aristotle, [*Nicomachean Ethics*](https://classics.mit.edu/Aristotle/nicomachaen.5.v.html), Book V, Chapter 10
In modern practice, this is why a judge might grant a "stay of execution" or consider "mitigating circumstances." Without this flexibility, the law becomes a Procrustean bed, lopping off the limbs of reality to fit the dimensions of a textbook.
## The Sovereign Exception: Where Rules Run Dry
While we like to believe we are a "government of laws, not of men," Carl Schmitt offers a chilling counter-perspective: the law is only as strong as the person who decides when it no longer applies. In his work [*Political Theology*](https://en.wikipedia.org/wiki/Political_Theology_(book)), Schmitt argues that the true locus of power is not found in the routine application of general rules, but in the **State of Exception**.
> "Sovereign is he who decides on the exception."
> — Carl Schmitt
Think of a pilot in an emergency. The general "rules of flight" are essential, but in a crisis, the pilot must decide which rules to break to save the plane. Schmitt suggests that legal systems are the same. Generality works during "calm weather," but in moments of existential threat—war, plague, or collapse—the general rule is suspended. This reveals a profound truth: the "normal" law depends entirely on an "extraordinary" power that sits outside the rules themselves.
## The Human Factor: Jerome Frank’s "Hunch"
Finally, we must confront the myth of the "Mechanical Judge." [Legal Realists](https://plato.stanford.edu/entries/legal-realism/) like Jerome Frank argue that "generality" is often a mask for psychological bias. In [*Law and the Modern Mind*](https://archive.org/details/lawandmodernmind0000fran_q7f1), Frank posits that a judge does not start with a rule and arrive at a conclusion; they start with a "hunch"—an intuitive reaction to the parties involved—and then work backward to find a general rule that justifies it.
The law, Frank argues, is not what is written in leather-bound volumes; it is whatever the official does. If a judge is tired, hungry, or subconsciously biased against a defendant's class, the "general rule" becomes a mere post-hoc rationalization. By acknowledging this, we move from a naive faith in abstract "generality" to a more honest, albeit uncomfortable, understanding of law as a human—and therefore fallible—enterprise.