Cosmic fluke or aliens? Mirrors?
SPOILERS...
I enjoyed this movie, but two issues aren't clear to me.
1) What caused the rise in the collective IQ of the ants? Was it a random event caused by a planetary alignment? Aliens? If it's aliens, why would they take over the ants, rather than humans directly, if that's what they want?
2) Insects build towers out of dirt, but how could the ants suddenly create a mirror on top of it? Manufacturing mirrors good enough to deflect sunlight is a complex mechanical / chemical process. It seems odd that the ants use such primitive methods as eating their opponents and chewing through wires, but then out of the blue develop the ability to make mirrors.