The ultimate arbiter of truth is experiment, not the comfort one derives from one's a priori beliefs, nor the beauty or elegance one ascribes to one's theoretical models.
Interpretation
Truth is determined through experimentation rather than personal beliefs or appealing theories.
In this quote, Lawrence M. Krauss emphasizes the importance of empirical evidence in understanding truth. He argues that subjective comfort and aesthetic appeal of beliefs or models should not override the necessity for experimental validation, highlighting the core principle of the scientific method where findings must be backed by observable and repeatable evidence.
In practice
In a scientific presentation when discussing the importance of data over opinion.
The one experience that I hope every student has at some point in their lives is to have some belief you profoundly, deeply hold, proved to be wrong because that is the most eye-opening experience you can have, and as a scientist, to me, is the most exciting experience I can ever have.
If our species is to survive, our future will probably require outposts beyond our own planet.
I cannot stress often enough that what science is all about is not proving things to be true but proving them to be false.
To the extent that we even understand string theory, it may imply a massive number of possible different universes with different laws of physics in each universe, and there may be no way of distinguishing between them or saying why the laws of physics are the way they are. And if I can predict anything, then I haven't explained anything.
The illusion of purpose and design is perhaps the most pervasive illusion about nature that science has to confront on a daily basis.
The universe is the way it is , whether we like_x000D_ it or not. The existence or nonexistence of a creator is independent_x000D_ of our desires . A world without God or purpose may seem harsh_x000D_ or pointless, but that alone doesn ' t require God to actually exist.
A commonsense interpretation of the facts suggests that a superintellect has monkeyed with physics, as well as with chemistry and biology, and that there are no blind forces worth speaking about in nature. The numbers one calculates from the facts seem to me so overwhelming as to put this conclusion almost beyond question.
Now, radical forward thinking is offering hope for the future: Replacement body parts to order. A team of scientists in California believe that if you can design them on a computer, you should be able to print them out.
The world of science and the world of literature have much in common. Each is an international club, helping to tie mankind together across barriers of nationality, race and language. I have been doubly lucky, being accepted as a member of both.
I believe that science is the engine of prosperity, that if you look around at the wealth of civilization today, it's the wealth that comes from science.
These slender little people (Homo Habilis), the size of modern 12 year olds, were devoid of fangs and claws and almost certainly slower on foot than the four legged animals around them. They could have succeeded in their new way of life only by relying on tools and sophisticated cooperative behavior
We have genuflected before the god of science only to find that it has given us the atomic bomb, producing fears and anxieties that science can never mitigate.
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