this reminds me of when I was learning to write fortran code for the navy around 1990. My rookie debugging method was to insert print statements throughout the

this reminds me of when I was learning to write fortran code for the navy around 1990. My rookie debugging method was to insert print statements throughout the code, but instead of printing something informational I would put 80s song lyrics. When I ran the program (which calculated fluid flow around submarines), it would print the lyrics to a song. Wherever the song stopped was where my code was failing.