The testing experience revised that assessment. Wearing the replicas in Alpine conditions — rocky terrain, variable moisture, cold temperatures — Hlaváček found the shoes to be genuinely effective for their environment. The bearskin sole’s texture and thickness provided grip on wet rock and insulation from cold ground. The grass filling maintained its insulating property over hours of wear, compressing but retaining air pockets. The bark framework kept the shape of the shoe stable against the compression of body weight in a way that a simple grass-filled bag would not.
The specific technology — a layered system with different materials serving different functional roles — is not what an unsophisticated or resource-limited society would produce. It is what a society with deep knowledge of available materials and long experience with the challenges of Alpine travel would produce. The shoes are, in a small but concrete way, a document of accumulated practical knowledge.
This pattern repeats across the Ötzi artifact assemblage. The fire-starting kit, with its combination of flint, iron pyrite, and multiple fungal and plant materials, is not simple; it represents knowledge of which minerals produce sparks, which plant materials catch sparks reliably, which fungal materials hold coals for extended periods. The clothing system, combining multiple species of animal hide in a single garment, reflects an understanding of the differential properties of those hides. The quiver and arrow system reflects knowledge of wood selection, fletching, and point-making.
The temptation to describe Copper Age material culture as “primitive” in the context of modern technology is understandable but misleading. The relevant comparison is not to modern technology but to the available materials and the practical challenges they addressed. By that standard, Ötzi’s toolkit was sophisticated, effective, and built from deep knowledge of the Alpine environment.