At CanUX 2019, Alastair Somerville's Mixed Reality Frameworks talk connects cognitive accessibility, perception, and mixed-reality design, using exercises such as Jenga to contrast human perspective with system-wide structure. The speaker-hosted deck describes anchoring design to human consciousness and diversity of people and places rather than isolated technology views. It encourages teams to build their own tools when existing frameworks fail to capture shifting mixed, virtual, and augmented experiences.