Despite being a bit slow, this is a well crafted movie with good character development (all actors,
also the kids are refreshingly different from Hollywood crafted types). Ignore the bad rating.
Not everything is explained, like what event has produced the dystopian world in which people survive like
scavengers. There are indications early in the movie that it must have been a swarm type technology.
The reason to include this in our math in movie collection is because
the robotic insects in that scene are organized as an icosahedron.
The technology to build such beasts is not yet there but it could get
there: the wings in the picture appear to work also as solar panels,
they could charge up when coming together to form the icosahedron.