It was a calculated risk, but oh boy, did I not have complete data!
You said that California corners were 4x4s! Now you are changing your story?!
Why am I not surprised?!
I looked up your California corner comment, but didn't mention it, because it didn't seem important, but I did originally write that to try to make a California corner out of it now I would need to put a 4x4 on top of the 2x4 and then put a 2x4 on the other side.
That seems like too much work.
I don't want to float an inside corner. Drywall is fragile as it is. I don't want to bump the corner and break off the edge of the wall.
I could do this with a little less wood, but it would seem like more work, although I just think there would be excessive conduction in the corners:
Around 08 I realized it snowed and why would I let snow melt into the tent storing the stuff from the shed?