Part I — The story
The story
Katherine Johnson was a brilliant mathematician whose calculations of orbital mechanics at NASA were critical to the success of the first American crewed spaceflights — including the mission that first put an American in orbit and the Apollo missions to the Moon. A Black woman working in the segregated America of the 1950s and 60s, she overcame profound racial and gender barriers through undeniable excellence, becoming indispensable to the space programme at a time when people like her were systematically excluded.
Her trustworthiness was legendary: when NASA first used electronic computers to calculate John Glenn's orbital flight, Glenn reportedly refused to fly until Johnson personally verified the machine's numbers by hand — 'get the girl to check the numbers'. Her story, long overlooked, became widely known through the book and film Hidden Figures. She is a study in overcoming systemic barriers through sheer excellence, in becoming indispensable through trusted mastery, and in the human judgement that even the best machines must earn their way past.
Part II — The playbook
The playbook
Become indispensable through excellence
Johnson's undeniable skill made her essential despite every barrier.
Earn trust above the machine
Glenn trusted her hand calculations over the computer itself.
Let mastery break the barrier
Her work forced open doors prejudice tried to keep shut.
In their words
Like what you do, and then you will do your best.
I counted everything. I counted the steps, the dishes, the stars.
Girls are capable of doing everything men are capable of doing.
What to read next
- Hidden Figures — Margot Lee Shetterly
Why this matters
The thinking behind these decisions connects to models you can study directly:
Frequently asked questions
What did Katherine Johnson do at NASA?
Her calculations of orbital mechanics were critical to the first American crewed spaceflights — including the first American in orbit and the Apollo Moon missions — overcoming profound racial and gender barriers through undeniable excellence.
Why did John Glenn want Katherine Johnson to check the numbers?
When NASA first used electronic computers for his orbital flight, Glenn reportedly refused to fly until Johnson personally verified the machine's calculations by hand — her accuracy was trusted above the computer itself.