Describir: Theory and design in the first machine age

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|  __ \\    / _ \\  |      \\   / _ \\  | \  / ||   / _ \\  |  __ \\  
| |  \ ||  | / \ || |  --  //  | / \ || |  \/  ||  | / \ || | |  \ || 
| |__/ ||  | \_/ || |  --  \\  | \_/ || | .  . ||  | \_/ || | |__/ || 
|_____//    \___//  |______//   \___//  |_|\/|_||   \___//  |_____//  
 -----`     `---`   `------`    `---`   `-`  `-`    `---`    -----`   
                                                                      
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