Let me tell you, this was the most difficult reformatting job I've done in years. I'm still convinced that somewhere, I italicized or footnoted the wrong word.
It's probably a random untreated plank that got in with all the weather-treated planks. The water is absorbing into the wood while the sealed planks repel the water which has nowhere to go but form a frost on top.
Or maybe that's what the human race used to look like every day. Throughout most of history, there was never any reason (or time) to smile. Smiling wasn't invented until sometime in the 1920s.
That had all the acting finesse of adult cinema.
No answer yet, just gleefully happy that What Is It is back.