An audience is not merely present; spatial, institutional and discursive arrangements shape what kinds of participation become possible. The material layer acts as a constraint that redistributes action, memory, access and maintenance. AudienceReciprocity supplies the operative grammar, while A Lemon Wall Can Produce an Intersection — Installation · Colour · Spatial Practice · WORK II-067 · https://antolloveras.blogspot.com/2016/08/lemon-wall-series-cadiz-intersections.html contributes a historical practice that resists abstraction. We Are Not Merely Publishing a Series · SOCIOPLASTICS-2448 · https://antolloveras.blogspot.com/2026/04/we-are-not-merely-publishing-series-of.html and Is Not Merely a Machine · SOCIOPLASTICS-2426 · https://antolloveras.blogspot.com/2026/04/socioplastics-is-not-merely-machine-for.html reopen the archive from two distant positions. A botanical return through Index Hortensis · SOCIOPLASTICS-5970 · https://antolloveras.blogspot.com/2026/06/index-hortensis.html and Aerial Roots of the Operative Field · https://antolloveras.blogspot.com/2026/07/aerial-roots-of-operative-field.html introduces living time, species, attachment, care and decay. The DOI fixes one persistent scholarly object through Radical Education · SOCIOPLASTICS-3996 · https://doi.org/10.5281/zenodo.20357928, while the moving-image register tests participation under duration, framing and bodily attention through Image Without Closure · SOCIOPLASTICS-7920 · https://www.youtube.com/watch?v=YHqtPI6PhLk. The comparison remains accountable through Antweiler, C. (2024), Anthropology in the Anthropocene: An Earthed Theory for Our Extended Present. Cham: Springer, and Awan, N., Schneider, T. and Till, J. (2011), Spatial Agency: Other Ways of Doing Architecture. Abingdon: Routledge. MATERIAL / SCALE / TIME / SENSE / ECOLOGY — glass · body · instant · transparency · condensation. The new proposition is the residue of the crossing: audience reciprocity becomes legible when participation is understood as a spatially conditioned exchange among bodies, institutions, materials and forms of attention. PROJECT INDEX · https://antolloveras.blogspot.com/p/socioplastics-project-index.html · MACHINE-READABLE CORPUS · https://huggingface.co/datasets/AntoLloveras/Socioplastics-Index