Trackball 50 Years Old

GRW writes "Rachel Ross in a Toronto Star story called The mouse that soared, writes "Fifty years ago, a team of engineers in Toronto turned a simple bowling ball into one of the most influential gadgets of our time. The trackball they created would grow into a mouse." "Tom Cranston and a colleague, Fred Longstaff, thought up the trackball idea while working on a Lake Ontario military project called the Digital Automated Tracking and Resolving System (DATAR)."" I played a bowling game in Boston once that used a bowling ball sized trackball to run a ball through a bizarre 3D bowling lane. I thought a regular trackball messed with my wrists ;)