謝謝，我在網上找到這段話，所以也許它還包括了這個意思

Well, to share the face palming moment you had. To qualify it's must be something that when you saw it you facepalmed in your own stupidity/obliviousness...

Well, to start, mine:
I have been building a out of the mountain wall to encircle the entrance and work for the outside needs of my dwarves. Ok, after I had built the entire wall, the second store floors, a barracks over the main gate, etc. I finally discover that, well, you can built constructions more than one tile at a time. Yes, after building a few hundred tiles with painstakingly micromanagement, I discover that I could have done that with a tenth of the work...