Your interesting “Datawatch” chart (November 16) shows US credit card debt soaring upwards “asymptotically” towards $1,000,000,000,000 (one trillion), while personal savings have plunged to a new low, ...
Rachel Botsman’s piece on Daniel McCallum’s 1855 organisational chart offers a fascinating glimpse into the origins of visualising organisations (“Uncharted territory”, Spectrum, March 29). Botsman ...