It's curious - in biology here we see similar problems solved in 3D, but it's not always clear how it's solved. Take the first few divisions during gastrulatio

It's curious - in biology here we see similar problems solved in 3D, but it's not always clear how it's solved. Take the first few divisions during gastrulation [1] and notice that every cell divides synchronously for the first few divisions even though no single signal should be able to propagate from end to end that fast. And in other 3D environments like the sphere of cells in breast tissue you have similar synchronies that must be achieved in an environment that does not allow for rapid signal exchange (such an environment [2]). [1] https://www.youtube.com/watch?v=4La78WtK4n8 https://www.youtube.com/watch?v=4La78WtK4n8 [2] https://www.youtube.com/watch?v=3W10ywd_s6w https://www.youtube.com/watch?v=3W10ywd_s6w