From Alex Jones, Sydney, Australia
You reported a study providing evidence of the origins of the Yamna culture that spread across Europe. One contention for which there is no evidence, however, is that the expansion of this cultural group involved carts pulled by horses. There is no evidence for the use of horses as draught animals in the areas concerned so early. What we do have is evidence for bullock wagons, and the word “yoke”, for the technology for harnessing bullocks, is widespread in subsequent languages (15 February, p 16).
