Do you know what day is Chief Executive Tung Chee-hwa's birthday? I certainly don't, and I hope you don't either, or else I would seriously question your sanity or your motives. Sadly, our ignorance on this vital issue pretty much makes us a bunch of know-nothings, at least according to ESDLife, the government's programme to promote internet usage. The question is included in a quiz titled 'How well do you know Hong Kong?' in a recent electronic newsletter. Other questions include such gems as 'what does Cepa stand for' and asking whether there are more men than women in Hong Kong. The quiz is enigmatically illustrated with a picture of a frog, although no explanation is given in the newsletter. Now that might be something worth knowing.