I read this paper again to see what was written about context related to boundary objects. Because of different contexts of designers, technicians and assemblers they cannot simply transfer knowledge but transform it. Engineers have conceptual locus of practice since they work with drawings. Assemblers have physical locus of practice and the technicians the mix of those two. Assemblers are used to pointing put from the equipment what they mean. Designers are not used to working with physical products thus the designer had trouble understanding what the assembler meant when he gestured with his hand the cause of the problem. It was not until a physical product was brought into the conversation when the designer understood what the gesture meant related to the equipment. With the help of the physical boundary object the assembler was able to explain why the parts had to come in certain order.