evidence: Thongchai Winichakul’s Siam Mapped: A History of the Geobody of a Nation is on the essential reading list of any Thai studies student. Published in 1988, it explains the increasing relevance of maps and concomitant delineation of borders to the Siamese polity from the pre-modern period to the 20th century. The text also comments on Thailand’s discourse of pan-Thaism and the rhetoric of territory lost which has defined Thai nationalism or "Thainess" – a discourse currently being revived via Thailand’s reform forums, which feature a video cataloguing the "loss" of 14 territories (other versions here and here) by the Thai state, including eight territories examined by Thongchai but also including, most recently, the "loss" of Khao Phra Wihan to Cambodia.