What were the similarities across the 4 babies that you saw in the film? What developmental milestones, emotions, behaviors seemed to unfold in the same ways?

Explanation:

The four babies in the film are:

Milestones

The story recounts the first time each of the babies made their first words when they started to crawl, and when they started to walk.

Emotions

The film also portrays their outburst of emotions, when a scene shows Ponijao and her sibling hitting each other because of a dispute.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )