Good historians and archaeologists don’t sit on their laurels.

Teachers will, in time, have to explain to students why life was once so very different in Ireland on Good Friday. Those teachers, unless we risk Brexit-scale disruption and division, will also tell their pupils why the three Sheehan brothers, from Fermoy in Co. Cork, died fighting with Canadian troops in WWII and, hopefully, explain the structures we put in place after the war to try to ensure that we never have WWIII.