In the late 1970s, the United States Department of Defense faced a crisis: over 450 incompatible programming languages across its systems. The solution was Ada, a language designed from first principles to address real-world software failures. Created under the leadership of Jean Ichbiah at CII Honeywell Bull, Ada introduced features that modern languages are still racing to adopt.

Ada's package system established a formal separation between interface and implementation that compilers enforce, not just recommend. This architectural decision, along with built-in concurrency, strong typing, and range-constrained types, anticipated safety features that languages like Rust and Python would independently rediscover decades later. The language's Steelman requirements document, issued in 1978, outlined properties derived from actual failure modes in DoD software systems.

Despite its influence on modern programming languages, Ada remains largely unknown outside specialized domains like avionics and defense systems. Its reputation as verbose and arcane masks its true significance: Ada was the first language to standardize generics, formalise package structures, and mandate safety checks that most languages leave to convention. The language that the industry dismissed has quietly become the blueprint for the safety features every modern language now seeks to acquire.