still true today

programming process flowchart from Timex/Sinclair 1000 manual:

1) Start
2) Write program with as few bugs as possible.
3) Test Program.
4) Does it work perfectly?
5) If Yes, Finish.
6) If No, Don't panic
7) Find the bugs.
8) Fix them, introducing as few new ones as possible. Go to 3) Test Program.