Apparently we don't....
Exchange seems to be the way.
According to:
Money as debt III
Printed copy · Anthology Volume 3, page 332 · cut by a page breakPrinted copy from The Tender For Law Anthology, Volume 3, page 332 (printed 13 June 2014). Added by this site; not part of the Facebook export. A page break in the printout cut off the beginning of this comment, with its name.