techno comment

For years radio had been operated by means of pressing buttons and turning dials;then as the technology became more sophisticated the controls were made touch-sensitive-you merely had to brush the panels with your fingers;now all you had to do was wave your hand in the general direction of the components and hope.it saved a lot of muscular expenditure,of course,but meant that you had to sit infuriatingly still if you wanted to keep listening to the same program. - Douglas Adams ,hitchhikers guide to the galaxy