Trapped in a stroller on the bus, a child throws back her head and strains against the harness, threatening to eject her new blue dummy. She wears a pink top, multi-coloured leggings, and brown pigtails touching her jaw.

She twists to the side. The dummy’s about to blow when a phone appears in her hands and she looks down at the screen. Her body relaxes. One hand rises to clasp a pigtail between thumb and forefinger and remains there, twisting a strand, pulling gently.

The dummy stirs in thoughtful sucks.