In preparation for delivering the 2021 John Urry lecture at Lancaster University on Thursday, I’ve been re-reading the book that introduced me to his work, Economies of Signs and Space, co-authored with Scott Lash. It was published in 1994, but being an economist, and therefore more ignorant of the other social sciences than I ought to be, I had only just found it when I wrote my 1997 The Weightless World. The commonalities in our ideas were striking – more so to me now than I recall them being 25 years ago, although I cite the book.

These included the intuition about the increasing salience of time and space – both books have a ‘cities’ chapter – fragmenting production systems, the importance of the cultural industries, the deficit of institutions lagging behind economic and cultural change. But above all the increasing share of value assigned to the intangible or weightless. They write: “What is increasingly produced are not material objects but signs,” and note the “increasing component of sign-value or image embedded in material objects.”

The lecture this week will pick up on these insights – I think I and they were pretty prescient – to talk about what it means to have an economy of ideas, but will also talk about the need to re-focus on the material foundation of this economy: giant warehouses and energy-guzzling AIs. Oh, and human brains.