"Brooks Law" has not been broken but but we have found a silver bullet. Brooks said in 1986 "there is no single development, in either technology or management technique, which by itself promises even one order of magnitude [tenfold] improvement within a decade in productivity, in reliability, in simplicity."

Claude Code and somewhere around Opus 4.5 I believe my personal productivity improved by at least 1 order of magnitude for the first time in my 25 year career.