The Secret Lives of Words

My Inaugural Lecture as a Twitter Thread

With gratitude to #WOMENSART

Communication is at the heart of all that humans do

Words allow transient internal thoughts to exist beyond our mind

Writing systems make permanent record of our words

To share ideas with people we’ve never met

Or have not been born

Technologies develop incrementally using this shared knowledge

Changing society for better

Or for worse

Words are the building blocks of complex language

Simple words can combine to express deeply profound ideas

We communicate emotions

Shape complex relationships

Complex computations are needed to understand words

To construct meaningful representations that resemble the thoughts of the speaker

Our minds contain stored knowledge about word meanings

But our mental dictionary is more complex and flexible than any book

Words don’t have fixed, immutable meanings

Their meanings are flexible and context dependent

The meaning the homophone “coach” depends if we’re discussing travel …

… or football

It a take more time and effort to understand homophones

We know this from monitoring readers’ eye-movements …

… or their brain activity

But homophones are weird words

What about more ordinary words like “run”?

Their meanings are also context dependent

Athletes run differently to rivers

or politicians running for election

or films running at the cinema

It means something different to run a bath

than to run a factory

We have very precise knowledge of when and how to use such words

We run baths, but not usually showers or sinks

Even our interpretation of precise words like “piano” are context dependent

We only focus on their heaviness when thinking about moving them

The precise features of “apple” that come to mind depend on whether you will eat or throw it

Dictionaries don’t scratch the surface of the richness, subtlety and flexibility of how the mind respond to words

Words take your mind on a complex journey within your hugely high-dimensional brain

Familiar words take your brain to familiar, stable places with vastly complex brain-space

Familiar words are complex galaxies with endless range of nuanced meanings

Words do not have fixed immutable lists of features

Words are tools that allow your brain to access complex constellations of meaning

Humans are lifetime learners

Ever learning new nuances of meaning

Our word meaning knowledge is an idiosyncratic product of unique experiences

Containing weird legacies of hobbies and interests

Influence by what people around us choose to discuss

Would communication be easier if language was less nebulous?

Perhaps. But less interesting

Lexical flexibility gives language endless capacity for expression

We distort and mutate meanings to express new ideas.

Art produces a highly variable cascade of ideas in our minds

Words work similar magic

Adaptable and often nebulous word meanings are at the heart of human creativity

That’s all

Thank you.