Pushing the Envelope
Pushing the envelope came into general use …after the publication Tom Wolfe’s book about the space program – The Right Stuff, 1979: One of the phrases that kept running through the conversation was ‘pushing the outside of the envelope’… [That] seemed to be the great challenge and satisfaction of flight test. http://www.phrases.org.uk/meanings/push-the-envelope.html You may not think…
