As this article mentions, up to 98% of people with "engineer" in their titles
don't actually drive any locomotives.
Whoops - it was 80% don't have one of those pieces of paper from the self-regulated Engineers In Search of Engineering Jobs (ESEJ).
In 50+ years many of my contracts have had titles that included "Architect" or "Engineer". I have yet to have a building or train crash because of my lack of certain pieces of paper.