Thanks to Russell Davies (the very nice man who's doing for planning what Patrick Moore did for stargazing) for the tip off about Tim Harford's book, The Undercover Economist.

Having digested this engaging extract on the nuts and bolts of price sensitivity I think i'll wait until the price drops and its published in paperback ...

Click here for Tim's advice on why less is more when it comes to giving presentations which will appeal to buddists and slackers alike.