Comprehension requires contextual knowledge so specific that even the colleague sitting next to me didn't understand it. Generally, it means I'm running a suite of engineering tools to ensure that when our instrument team has control over the spacecraft propulsion & orientation systems, we don't violate any flight rules. It's also not an unusual thing for me to say, as I perform that particular task about once every three weeks. It takes two to three days of work to finalize the design.
Lots of you have sci/tech/med jobs. What would be a similar common example?