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If they are isolated from each other , each band will produce one invention a century , so that each progresses at the same rate as before . Their cultures will diverge somewhat , as they will hit upon the same inventions only rarely ...
gists pointed out , over and over , that every invention contains some borrowing and every borrowing some invention . Where you draw the line between diffusion and original invention , then , is a matter of convenience .
Then nothing more is heard of this invention for over a thousand years . This disappearance is not really surprising . For , in the ancient world , an invention could be lost and rediscovered several times . The numbers of engineers and ...
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LibraryThing ReviewCrítica de los usuarios - PDCRead - LibraryThing
This was originally written in 1962, and is therefore is a little dated. Sprague de Camp has written a book all about the different civilisations and the technologies that that invented or acquired ... Leer comentario completo
LibraryThing ReviewCrítica de los usuarios - Schmerguls - LibraryThing
5609. The Ancient Engineers, by L. Sprague De Camp (read 21 Jan 2019) This book was first published in 1963 and hence its bibliography includes nothing after that date. It undertakes to tell of the ... Leer comentario completo
One The Coming of the Engineers
Three The Mesopotamian Engineers
Four The Greek Engineers
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