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.
If your payloads cost hundreds of millions of dollars, they actually cost more than the launch. It puts a lot of pressure on the launch vehicle not to change, to be very stable. Reliability becomes much more important than the cost. It's hard to get off of that equilibrium.
Science is basically an inoculation against charlatans.
Astronomers can look back in time. We can look at things as they used to be. We have an idea there was a Big Bang explosion 13.7 billion years ago. We have a story of how galaxies and stars were made. It's an amazing story.
That which is measured improves. That which is measured and reported improves exponentially.
The greatest gain from space travel consists in the extension of our knowledge. In a hundred years this newly won knowledge will pay huge and unexpected dividends.
One of the things that science fiction gets to do is thought experiments about the human condition that would be impractical or unethical to conduct in real life.
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