If you wish to claim "mistake", acceptance of arrearage would undermine that assertion.
Printed copy · Anthology Volume 1, page 1136 · cut by a page breakPrinted copy from The Tender For Law Anthology, Volume 1, page 1136 (printed 14 June 2014). Added by this site; not part of the Facebook export. A page break in the printout swallowed this comment: only its date was printed.