That's laughably untrue. In fact, in the 70s, most system programming was done in anything except C. Off the top of my head: IBM: assembler & PL/S Unisys: Al

That's laughably untrue. In fact, in the 70s, most system programming was done in anything except C. Off the top of my head: IBM: assembler & PL/S Unisys: Algol GE/MIT (Multics): PL/I(-ish) Control Data: Cybill (Pascal-ish) & assembler Intel and Digital Research: PL/M DEC: MACRO-11 & BLISS DG: assembly & PL/I Xerox: assembly, Smalltalk, Mesa/Cedar PERQ: Pascal