|Description||Lecture at the annual conference of the Chief Scientist at the Ministry of Aviation, 26 November 1965.|
Various texts of the lecture:
6pp manuscript plan of lecture, with additional notes in red and black pencil.
11pp typescript version described as 'copy with references' with many manuscript revisions and additions (lacks last page).
18pp typescript copy taken c.1972 for projected collected writings.
This is the paper which was used as no.4 in Blackett's privately-circulated set of papers on 'Science, Technology and Government', December 1966.