Two centuries ago
Leibnitz
invented a
calculating machine
which embodied most of the essential features of recent
keyboard devices
 
     
 
Babbage,
even with remarkably generous support for his time, could not produce his
great arithmetical machine
   
Back
 
Had a Pharaoh been given detailed and explicit designs of an automobile, it would have taxed the resources of his kingdom to have fashioned the thousands of parts for a single car...
 
...and that car would have broken down on the first trip to Giza.