I launched one or Arwen's balls into this tree this morning expecting it to cascade down like a binomial machine https://www.youtube.com/watch?v=3m4bxse2JEQ
I waited but nothing happened. The ball never landed. The tree was too big to shake so Arwen was left without a ball for the rest of her walk. Sorry Arwen.
Maybe it was the spirit of the tree we took down yesterday enacting some form of revenge.