For these societies, therefore, and for the numerous millennia of earlier unrecorded historical past by which gradual however substantial technological advances had been made, it is essential to rely heavily upon archaeological evidence. The historian of technology have to be ready to make use of all these sources, and to name upon the talents of the archaeologist, the engineer, the architect, and different specialists as acceptable. The sense of social need must be strongly felt, or individuals will not be ready to commit sources to a technological innovation.
Medical Definition
Through it all there was the one constant; bullet-pointed textual …
