Illustration by Dorothy Leung, Published 14:38, Apr. 21, 2021 As kids, my younger brother and I would snicker whenever my mother stopped to run her palms over what she thought was an exciting bit of a building. It could have been a limestone handrail at a shopping mall, a granite column at an old bank, or reclaimed wood at a hipster restaurant; sometimes, she would take our little hands and guide us to do the same. To this day, I can walk into a room and estimate its ceiling height because she taught us how to assess the highness and lowness of rooms. I’m also well versed in the slip ...