> In retrospect, I think I saw the fundamental difficulty in what we were doing and I don’t think he appreciated it (look at the stairs picture and see if you can figure it out)
What was it?
What was it?
I don't know if that's what the author meant, though.
Interestingly, as crude as the diagram is, you can feed it to ChatGPT's data analysis plugin and it will not only recognize what's depicted, but offer to calculate the cut angles for the 2x12s given the rise and run. I was pretty impressed that it recognized the problem without any prompting other than the image itself.