One of the strengths of the archaeological discipline is our ability to examine social transformations over the course of centuries or millennia. However, we rarely think about the ways in which temporal scale affects our interpretations of these processes. Transformative social changes look different when seen from the perspective of the longue durée, a human lifespan, or a single day. Although they clearly result from human actions, long-term, major social changes cannot be understood simply as additive concatenations of short-term shifts.

In this article I employ the example of the ‘Blind Man's stick’ (BMS) in order to redraw the traditional boundaries that separate brains, bodies and things. It is argued that the functional anatomy of the human brain is a dynamic bio-cultural construct subject to continuous ontogenetic and phylogenetic remodelling by behaviourally important and socially embedded experiences. These experiences are mediated and sometimes constituted by the use of material objects and artefacts (like the stick) which for that reason should be seen as continuous and active parts of the human cognitive architecture. Based on the above premises I use the example of the Blombos shell beads in order to explore the role of early body decoration in the emergence of human self awareness.

Are there long-term processes invisible over short spans? And if so, how might they relate to the loci of long-term social change, those performative or practical moments wherein agents enact, embody, or otherwise engage traditions, landscapes, or structures? Here, we are particularly concerned with the experience of starry skies as these were historically reckoned through cluttered object fields and cosmic events. These are key to understanding the emergent properties of ethnoastronomies and cultural landscapes that, in certain moments, may be described as leading to historical conjunctures.

Where does biology end and culture begin? While the human body is now widely accepted as being both biological and cultural, the brain is still considered by archaeologists as being a biological entity that provides the capacity for culture and is subject to no further change after the evolution of Homo sapiens. This article reviews recent research that suggests that the brain has continued to evolve at an increasing rate in recent times under the influence of culturally created environments and that both the anatomy and function of individual brains can be manipulated by cultural behaviour. It describes an experiment in which one of us successfully changed his own brain in response to his cultural activity.

Colour symbolism permeated the world of indigenous North America. This symbolism was often tied to the cosmos where the earth was viewed as a quadrilateral disk and each of the four cardinal directions was linked with a colour array such as red, white, black, and blue. We suggest that the recurring use of certain colours and colour contrasts comprised a suite of long-term historical practices that were essential for reproducing certain views about the world and about being in the world. Further, the rendering of colour had a plasticity that allowed it to enter a discourse about daily life that was intertwined with notions of the long-term. As a case study, we focus on well-known ceramic head effigies in the central Mississippi Valley to argue that their veneers of contrasting red and white were imbued with a notion of time immemorial that converged with other conceptions of temporality, most importantly, a pressing concern with regional violence, personal safety, and spiritual integrity.

Mesoamerica was the time-place in the New World where the memory arts of writing and calendrical notation achieved their highest forms. Both had long histories going back at least to the first millennium bc and were part of an even longer and wider history of memorials and commemorations dating millennia earlier. In this essay we consider time and memorials as social constructs and forms of practice and provide data for sequential changes in both. As commonly deployed and materialized, history and memorials are about the evolving ‘now’ and future aspirations rather than a fixed past — but they are communicated by re-presenting supposed pasts. In Mesoamerica, the things remembered, the manner of remembering them, and the reasons for doing so evolved with changing social and political institutions and circumstances.

Over the last two decades, there has been increasing attention to community archaeology, an archaeology which acknowledges the impact of archaeological research upon the communities among which it is conducted. Doing fieldwork has tangible effects upon the people we work among: archaeologists provide employment, spend money locally, negotiate local power structures, provide exotic connections, and, not least, change the landscape of knowledge by helping local people understand more or different things about their ancestors and about their own historical identity. While this is true worldwide, within American Historical Archaeology this strand of research has converged with a tradition of sophisticated materialist analysis highlighting not only class domination but also resistance and the persistence of alternative practices, ideologies and identities. A key element of this archaeology is public participation in the process of revealing a past of domination, struggle and resistance. The result is an archaeology which aspires not only to revise traditionally endorsed accounts of American history, but also to be an activist archaeology.

Mark Leone began this line of activist, participatory historical archaeology many years ago in Annapolis, and many of the scholars currently contributing to this body of work have been trained or inspired by this project. In The Archaeology of Liberty in an American Capital, Leone summarizes twenty-five years of research at Annapolis.

The Archaeology of Liberty in an American Capital: Excavations in Annapolis has received the Society for Historical Archaeology's James Deetz Book Award for 2008.