When I was an undergraduate, I took an elective hands-on course in communication engineering, which simply involved using a network cable crimper in the laboratory.

I changed to a new broadband today, and there are too many rooms, so I need 1 main and 3 secondary units to cover. When setting up the wired mesh, the technician didn't press the wire casing into the cable.

I said, Master, you are doing it wrong, but the Master stubbornly insisted that it is like this.

I took the crimping tool and, following the T568B wiring scheme, crimped a perfect connector. The master was silent...