Alex Chen arrived in Vancouver on a rainy Tuesday morning, and by Tuesday afternoon, Daniel Carter wanted to punch him in the throat.

It wasn't rational. Daniel knew it wasn't rational. He sat on Aria's sofa with Maya on his lap, watching through the open studio door as Alex and Aria leaned together over the drafting table, their heads inches apart, their voices overlapping in a rapid exchange about cantilever tolerances and seismic load distributions. They'd been at it for three hours. Three h