But

Used to describe "specification-driven development" where the system validates code as it is generated—a shift from learning syntax to developing judgment [31].

Many were taught in school that this is a "sin." However, linguists and style guides generally agree it is perfectly acceptable for emphasis or to create a sharper contrast [4, 23]. The Comma Rule: However , Nevertheless , Nonetheless , Notwithstanding

Developers often post about the "but then it works anyway" phenomenon, where deployment stages throw errors but still successfully go live [32]. 3. Usage as "Except"

Discussing burnout, early retirement plans, or job transitions [24, 30]. 2. The Grammar Guide: Rules and "Rules" Yet . Contrastive: In contrast

Use a comma before "but" when it connects two independent clauses (complete sentences) [1, 9].

However , Nevertheless , Nonetheless , Notwithstanding . Casual: Though (at the end of a sentence), Still , Yet . Contrastive: In contrast , On the other hand , Conversely . 3. Usage as "Except"