Why IBM’s 67-Year-Old Language Still Powers The World IBM & 67-year-old programming language is transforming the industry. I once watched a 65-year-old operator in a Chicago mainframe room manually debug a 1978 PL/I script-just because “it’s simpler than chasing down a Java exception.” That’s the paradox of IBM’s PL/I, a 1964 creation still embedded in […]