Ah, the eternal dilemma of legacy maintenance. Do you want to decipher cryptic Fortran from the moon landing era or try to understand whatever framework-of-the-month some junior dev installed because they saw it on a YouTube tutorial?
The cold sweat is real. Ancient code at least has the excuse of being written when computers had less memory than your coffee maker. Modern "vibe code" was written yesterday by someone who named all their variables after their favorite anime characters.
Either way, you're the poor soul who has to maintain it until retirement or sweet release, whichever comes first.