Day one of the World Economic Forum on Africa was a day for “C” words – from cross-border trade to call centres, competitiveness, commodities, commuters, common markets, consumer loans, capitalisation, Cape Town-to-Cairo, current demographics, conurbations, community commissions and communism – all of which combined appeared to cast conferees onto a wave of currently uncommon confidence in the continent. China and corruption were the conspicuous elephants in the room. By J BROOKS SPECTOR.