http://www.manchestereveningnews.co....card_confusion
Summary:
Camelot - the national lottery organisers - withdrew a scratch card because players found it too confusing. The players were supposed to scratch away a window to reveal a temperature lower than the one printed on the card.
Apparently the chavs were unable to figure out negative numbers and did not realise that (e.g.) -6 is lower than -5.
According to the article, 15.1m adults in the UK have poor numeracy skills - which is about 30% of the total adult population.
Oh dear...
Cheers,
Nick