Richard Feynman recounts how his early interest in science began through playing with bathroom tiles with his father. His father would set up the tiles vertically like dominoes for Feynman to knock down as a baby in his highchair. Over time, Feynman would help his father set up more complicated tile patterns. When his mother saw this, she told his father to let Feynman place the tiles however he wanted rather than following a set pattern. The author of the piece being summarized is Richard Feynman recounting his early childhood experiences that sparked his interest in science.