It’s always fun to play such games on a slack day, and so California Technology Stock Letter has been doing its sums and reckons that if Sun Microsystems continues its present growth rate for the next 22 years, it will overtake IBM in annual turnover by the year 2010 – but then Sun is growing at 35% a year, a rate very unlikely to be maintained much longer, while IBM has been growing at 11% or less.