What is the name of the phenomenon where a person abandons simplifying a complex system upon understanding the system?
I provide examples of complex systems, so as not to get hung up on a specific domain.
A new member of a software development team has to work with legacy, seemingly complicated code. Said person feels the need to simplify the code, and upon doing so, familiarises him/herself with the code. This is usually the point at which the new team member abandons the refactoring/rewrite. She thinks "OK, I understand it now. I can carry on with the actual task I set out to do".
Future new members of the software development team will now lose the benefit of this simplification, and will go through the same (arguably wasteful) learning process themselves.
The reason for the simplification could still be entirely valid (e.g. in a software context again: using domain types instead of primitive types; to communicate intent more clearly).
An electrician who has never been to a particular house is tasked with installing a three-way switch on the staircase. Said electrician sees the wiring and feels the need to rip it all out and start again. He/she starts making mental notes of the wires, their colours, which trip switches the wires are connected to, etc. After a while, the electrician understands the wiring, abandons the plan to rewire the entire house, and now simply installs the three-way switch.
Future electricians who visit the house will lose the benefit of the rewire (simplification) and will go through the same familiarisation process themselves.