It is not a simple matter to differentiate unsuccessful from successful experiments. . . .[Most] work that is finally successful is the result of a series of unsuccessful tests in which difficulties are gradually eliminated.
Interpretation
Success often comes after many failures, as each setback helps refine the approach.
This quote by Robert H. Goddard emphasizes that distinguishing between unsuccessful and successful experiments is not straightforward. It highlights the reality that many successful outcomes are achieved only after undergoing a series of trials, where each failure teaches valuable lessons and gradually removes obstacles. This reflects the iterative nature of scientific inquiry and progress, stressing the importance of perseverance and learning from mistakes.
In practice
In a motivational speech about innovation and resilience in the face of failure.
How many more years I shall be able to work on the problem I do not know; I hope, as long as I live. There can be no thought of finishing, for 'aiming at the stars' both literally and figuratively, is a problem to occupy generations, so that no matter how much progress one makes, there is always the thrill of just beginning.
It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow.
The only barrier to human development is ignorance, and this is not insurmountable.
Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace.
More than any other product of human scientific culture scientific knowledge is the collective property of all mankind.
I remember my friend Johnny von Neumann used to say, 'with four parameters I can fit an elephant and with five I can make him wiggle his trunk.'
Evolution has encountered no intellectual trouble; no new arguments have been offered. Creationism is a home-grown phenomenon of American sociocultural history-a splinter movement ... who believe that every word in the Bible must be literally true, whatever such a claim might mean.
That we can now think of no mechanism for astrology is relevant but unconvincing. No mechanism was known, for example, for continental drift when it was proposed by Wegener. Nevertheless, we see that Wegener was right, and those who objected on the grounds of unavailable mechanism were wrong.
It is an art of no little importance to administer medicines properly: but, it is an art of much greater and more difficult acquisition to know when to suspend or altogether to omit them.
For me, the level at which natural selection causes the phenomenon of adaptation is the level of the replicator - the gene.
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