So, to qualify as exploration a journey had to be credible, had to involve hardship and risk, and had to include the novelty of discovery. Thereafter, like cricket it was somewhat hard to explain to the uninitiated. But one element was absolutely vital; indeed it was precisely that which distinguished the age of exploration from previous ages of discovery and which necessitated the adoption of the word ‘exploration.’ It was, quite simply, a reverence for science.
— John Keay, The Permanent Book of Exploration
