In the video on designing collapsible fabrics at a time stamp of 3:00 Jane discusses three ways to develop a collapsible fabric. In the second method she mentions over twist yarns, elastic yarns and stainless steel, however the last is not elaborated on . Unlike the elastic yarn and the overtwist I assume the stainless steel is the inactive yarn in this case and the companion yarn would need to be the active component, is this correct. So as an example I could use the stainless with the merino? I have some stainless steel and I have not used it yet, so I am searching for ideas. Any thoughts on this yarn would be appreciated, thank you.