This article was written in collaboration with Senior UX researcher Caitria O’Neill, currently at Google, previously at Airbnb and Facebook. — The human brain is lazy, biased, and prone to shortcuts. The user experience study of human cognition can be mushy, unscientific, and filled with false assumptions—perhaps it’s the fault of a lazy brain. Cognition is complex, and many factors play into gut reactions or an instant impression. When you ask someone, “Why’d you do that?” …