Exceptional work > Hours worked.
In studies, when great work is done, managers couldn't tell the difference between employees who *actually* worked 80 hrs/week, and those who just pretended to.
They even got promoted at the same rates. Here are 3 important takeaways... 1/
Operating an orbital laboratory hundreds of miles above Earthโs surface for 20 years is an amazing technological achievement. Happy anniversary, @space_station! #SpaceStation20th