Advocating for “brilliant basics” in human-machine interfaces (HMI)

Applying first design principles to a complex adaptive mission planning system headed toward its 1.0 release


Work Features

  • Human factors science & cognitive systems engineering • Aviation psychology

  • Design strategy • Leadership • Risk assessment • Conflict resolution

  • Design crits • Agile sprints • Persuasion & Influence

Employer

Shield AI

Duration

3 weeks


Vignette

What? (Premise, Context)

There are some things you just don’t mess with. Context – and how people do and don’t learn – are at the top of the list.

This case addresses a deprecated non-NDA-protected feature — the primary flight display (PFD), which merges critical flight data into a single small screen — among the 29 human-machine interface (HMI) instruments I worked on.

  • There is also a companion study concerning the design of telemetry instrumentation, currently under construction on another page

Set in a semi-regulated space, this story outlines how I prevailed upon a team of designers unfamiliar with foundational human factors science. And, more precisely, how this would aid their work in the design of key instruments in a multi-modal aviation joint-cognitive system system designed for ISR missions (intelligence, surveillance, reconnaissance). I socialized these concepts not only because the feature in question was essential, but it was also at risk of becoming degraded "by design" to the point of risking failure.

Topics fundamentally relate to the interplay of:

  • Information processing (from human factors psychology): Emphasis on human limitations.

  • Meaning processing (from cognitive systems engineering): Emphasis on leveraging human capabilities in a complex adaptive control system. Defined by complementarity: “The fundamental principle of cognition that the universal can be perceived only in the particular, while the particular can be thought of only to the universal.” — Cassirer, 1953.

Now what? (Strategy, Actions)

I educated designers and managers about the following topics:

  • Signal detection

  • Jobs to be done

  • Common ground

  • Color psychology

  • Emotional valence

  • Occupational stress

  • Situational awareness

  • Task & work performance

  • Aesthetic usability effects

  • Human-AI function allocation

  • How people do and don’t learn

  • Germane cognitive load (the working memory effort allocated to managing intrinsic load)

So what? (Value Adds, Impacts)

By bringing clarity to a sophisticated socio-technical system through broadened upward communication (which represents the nucleus of research), I had successfully made my case. Relevant leadership bought into the science, and designs became more congruent as they better conformed to military standards, thus satisfying pilot, customer, and government expectations.

Click images below to enlarge

Primary flight display examples from various aircrafts

Sample iterations

Form factor 1 of 2 — Tablet

Form factor 2 of 2: MaxVision MiniPac 8110CP

A PFD in motion