Stuart Feldman wrote the first makefile in 1977. All makefiles since have started by copying a previous one, in unbroken succession.
'The enjoyment of one's tools is an essential ingredient of successful work.' -- Donald E. Knuth
"Don’t ever, ever plan a backup strategy. Plan a restore strategy." -- Paul Randal
"If you cannot think of three ways of abusing a tool, you do not understand how to use it." -- Gerald Weinberg