In Wallace Stegner's "All the Little Live Things," Ruth expresses her perspective on the interests of boys and girls regarding animals and machines. She observes that boys tend to prefer mechanical objects, like cars and motorcycles, which allow them to dismantle and reconstruct. This aligns with their exploratory instincts, making horses less appealing to them.

Conversely, Ruth notes that girls are drawn to horses, appreciating them for their life and biological functions. This distinction highlights the varying attractions and affinities that boys and girls have, reflecting broader themes of gender roles and interests in the world around them.