In 1968 Stewart Brand produced the first edition of the Whole Earth Catalog. It had a picture of the earth seen from space on the cover and inside were lists of useful tools for transforming the planet by distributing power to the people. I remember seeing it in bookshops. Thrilling and demanding, it called on me to join my generation. Like Woodstock, student demos, dope, tie-dyed T-shirts and improbably flared trousers, the Catalog told us we were different.