As time went on, people began to notice that Frodo also showed signs of good ‘preservation’: outwardly he retained the appearance of a robust and energetic hobbit just out of his tweens. ‘Some folk have all the luck,’ they said; but it was not until Frodo approached the usually more sober age of fifty that they began to think it queer.
There is a four dimensional set of which the Mandelbrot set and Julia sets are both slices.