In my very first job, I was asked to fill in a paper form to allow a secretary to type up an internal resume that could be pushed around to clients to get contracting gigs.
When I proofread the resume, I found that she had misread my handwritten ‘C++ experience’ (a programming language) as ‘C# experience’ (at the time, meaningless gibberish). I sent back a correction.
Then, in 2000, Microsoft released a new language: C#.
In 2003, I was kicking myself. If I hadn’t made that correction, I would be bragging about over a decade of C# experience. I would be *so* employable when everyone else was maxing out at three years and my actual resume didn’t mention it at all.