Really more of an art form

It is surprising how non-scientific and exact the act of building a house is. There is a lot of guesswork and "thinking on your feet" that I really would not expect. I mean people have been carpenters for at least something like 5000 years - couldn't they have it down by now?

Another thing that is much more art than science is putting up a boulder retaining wall. i am just hoping that there is enough art to look nice but just enough science to keep the wall in a more or less vertical orientation. Photos to be posted when I find my digital camera.