What exactly
is a sign? At first glance, that might sound like a strange question. Signs are everywhere: telling us where to go, what to do, what not to do, and sometimes what might happen if we ignore instructions. But as my guest,
Jeffrey Ludlow Saentz explains, signs are much more than bits of information on walls or beside roads.
Episode Summary Jeffrey is a signage designer who works on complex buildings and environments around the world — airports, offices, museums, and other places where helping people find their way really matters. He’s also the author of
A Sign Is..., a fascinating book exploring the history, meaning, and cultural significance of the signs that shape our everyday behaviour.
In this conversation, we explore why good signage is often invisible, how buildings “speak” to us through wayfinding systems, and what signs reveal about power, trust, and human behaviour. Along the way we discuss hacked traffic signs, casino design, airport navigation, and why something as simple as an arrow carries centuries of history.
AI-Generated Timestamped Summary 00:00 – Introduction: why signs are more interesting than they first appear
03:00 – How Jeffrey became a signage designer
04:00 – The challenge of helping people navigate complex buildings
07:00 – What actually is a sign?
09:00 – Why “everything can be a sign”
11:00 – The power dynamics behind signage and authority
13:00 – How designers observe signage in the real world
14:30 – Cultural differences in wayfinding and navigation
19:30 – Why Jeffrey wrote A Sign Is..
22:00 – The fascinating history of fire safety signage
24:00 – Curiosity and the stories hidden behind everyday signs
27:00 – Hacked construction signs and unexpected messages
31:00 – Trust, authority, and information on signs
35:00 – Advertising, nudging, and attention
36:00 – Information overload and competing signals
39:00 – The learned language of signs and symbols
41:00 – Why good signage is “invisible” when it works
43:00 – Airports, trust, and wayfinding design
46:00 – How people become signage designers
47:30 – How casinos, airports, and museums use signs differently
50:00 – The psychology of navigation
54:00 – Why signage can’t work perfectly for everyone
57:00 – Why wayfinding is an art rather than a science
01:02:00 – Jeffrey’s book A Sign Is and where to find it
01:04:00 – What signs might look like in the future In this episode we discuss
Key Topics- Why signage is a form of behavioural communication
- How buildings “talk” to people through wayfinding systems
- The psychology of navigation and spatial awareness
- Why good signage is invisible
- How casinos deliberately make navigation harder
- Why museums minimise signs while airports maximise them
- The cultural differences in how places are navigated
- What hacked traffic signs reveal about trust in authority
- Why signs act as nudges that shape behaviour
- The limits of signage when designing for large groups
- How digital navigation may change our relationship with physical signs
About JeffreyJeffrey Ludlow is a signage and wayfinding designer and founder of Point of Reference Studio, a design practice specialising in signage systems, environmental graphics, and branding for public environments. Trained as an architect, Jeffrey’s work sits at the intersection of architecture, graphic design, and behavioural psychology — helping people navigate complex spaces more intuitively. He is the author of A Sign Is, a book exploring the cultural, historical, and behavioural significance of the signs that surround us.
Links Jeffrey's book 'A Sign Is...' -
https://oroeditions.com/product/a-sign-isPoint of Reference, the Madrid-based studio Jeffrey founded -
https://pointofreference.studio/
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