Trust Me I Get It

The eternal junior dev experience: write 50 tests for every semicolon. Your two-line function might look innocent, but without those 100 test cases, civilization itself might collapse. Senior devs never explain why - they just raise a finger and invoke the sacred mantra of "mysterious and important work." Meanwhile, you're wondering if testing that your function returns null when given the ASCII value of your cat's birthday is really necessary for production stability.