During the Renaissance, the five senses were understood to form a hierarchical system from the highest sense of vision down to touch. Vision was correlated to fire and light, hearing to air, smell to vapour, taste to water, and touch to earth.
Perhaps the human fascination with fire stems from the totality of its sensory stimulation. The fire gives a flickering and glowing light, ever moving, ever changing. It crackles and hisses and fills the room with the smells of smoke and wood and perhaps even food. It penetrates us with its warmth. Every sense is stimulated and all of their associated modes of perception, such as memory and an awareness of time, are also brought into play, focused on the one experience of the fire. Together they create such an intense feeling of reality, of the "here and nowness" of the moment, that the fire becomes completely captivating.
The design industry is an ecosystem. External design teams provide critical functions beyond augmenting internal design resources. Thought leadership — pushing the field’s boundaries — is indeed one of them.
Many practices and tools we take for granted — journey maps, personas, conceptual frameworks — were pioneered and/or popularized by ‘outies.’ Most of the field’s foundational books and blogs are by people outside ‘client’ organizations.
This isn’t because internal designers aren’t as clever or dedicated as their external colleagues. (Many ‘innies’ are former ‘outies.’) It’s because internal design roles are structurally misaligned with public thought leadership.