All scientists and engineers experience these, especially when it comes to having to write up all the work that’s been done.
To quote patter:
“Jan Meyer and Roy Land developed the notion of the threshold concept. They use the metaphor of a conceptual gateway – passing through the gate means that things that seemed previously mysterious, nonsensical and incomprehensible become clear. So understanding a threshold concept is like going through the gate. Once you ’get it’, once you grasp the threshold concept, the way you understand what you are doing, and why, changes for good. You just see and understand things differently. You can’t easily unlearn a threshold concept.”
The post is well worth reading in its entirety and it directs to the originators of Threshold Concepts.