However, the hardest part of being a scientist, I imagine, is the patience it requires. A true experiment demands a rigorous and exacting process.
But it allows for no short cuts, it tolerates no half-measures. Wobbly, soft concepts like ‘questions’ and ‘predictions’ — the latter often translated by ordinary humans as ‘hope’ — are permissible in the beginning stages but are banished when the real work begins.
While, once the test is under way, it can’t be manipulated. Purity demands a clean methodology. Desire, personal beliefs, or expectation can’t play any part.[ grantland.com]