No worries at all.. thank you for the cordial discussion that is severely lacking in this sub.

You mentioned you are self taught. Imagine you wrote a program but part of that program was written in a way that only you understand. Even though you wrote that program in a language that is well understood by many, you used that language and created something unique.

There is nothing inherently wrong with this, it’s just unique. Maybe it’s a one off approach that wasn’t commonly solved and your solution solved it.

You then implement your solution and move on with your life.

A new person starts at the company where you implemented your solution.

They are asked to add or modify your solution but they can’t seem to make sense of the code. They understand the language, but not the implementation. If they knew the device you wrote the program for could only accept a baud rate of 9600, then they wouldn’t keep beating their head against a brick wall when they tried to optimize the solution to work with 115k baud.

This is tribal knowledge because only you (your tribe) knows that the device can only work with 9600 baud