1. To the extent it's standard, it's covered in textbooks which are easily learnable by AI.

2. To the extent it's original, it often is independently rediscoverable by AI from a combination of general intelligence plus workplace training data over which the AI learns.

3. To the extent it's learned (by a human from another human), it'll still slowly be captured by workplace training data over which the AI learns.

4. To the extent it's undocumented, it's up to management to have the processes documented.