8 ms·

Grow, of course. I mean, come on.

• jagged-chisel 2y ago
  Some intuition says one must consider the outer iron expanding into the hole. Some thought allows the realization that the only direction for expansion is outward.
  • wat10000 2y ago
    Or consider that, assuming the expansion is uniform, it's applying a scale transform to the object and otherwise leaving the shape exactly the same. All aspects of the shape will therefore grow larger.
    • jagged-chisel 2y ago
      This is a novel way to think about it that hadn’t occurred to me. Thanks!