I am banging my head against a heisenbug. I wrote the code that works yesterday. I spent a lot of time rewriting it a dozen times. Now I am back to the original

I am banging my head against a heisenbug. I wrote the code that works yesterday. I spent a lot of time rewriting it a dozen times. Now I am back to the original and it works for unexplainable reasons. I doubt that a chatbot could have sped this up. I envy the people who are bottlenecked on their typing speed and benefit 10 times more from the chat bot than I do.