yeah, in that case the Senior co-worker literally is the text book. That being said, just reading the source code is under untilized these days. Engineers some

yeah, in that case the Senior co-worker literally is the text book. That being said, just reading the source code is under untilized these days. Engineers sometimes ask me how the system works, I send them to the repo. It's all right there, just have to learn to read the story it tells. One risk is that often times the co-worker knows the business logic in "how it ought to be" not the reality of the underlying code. I've had engineers say "It works like X" and I have to say "well, only sometimes. The code says this..."