back in 1981, you have computers that display graphics like this, and optical mouse. that's before Apple made it popular. pictured is one of #lisp machine work station. http://xahlee.info/kbd/space-cadet_keyboard.html
note the LMI logo. It's #lisp cons cell, which is the building block of lisp's list. but also, Guy Steele Says: Don't Iterate, Recurse, and Get rid of cons! http://xahlee.info/comp/Guy_Steele_parallel_computing.html #xahcode
@xahlee these big ol' LISP machines had the most glorious keyboards!
@xahleeI used to work on Xerox 1108 "Dandelion" and 1186 "Daybreak" machines. They were brilliant - far in advance of any software development environment we have today.
@xahlee that coffee mug is unacceptably far away smh