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.
The only useful function of a statistician is to make predictions, and thus to provide a basis for action.
Polls consistently show that the majority of Americans favour research using embryonic stem cells and yet politicians continue to pander to the outspoken religious minority that is hampering efforts to develop this potentially valuable technology.
Evolutionary plasticity can be purchased only at the ruthlessly dear price of continuously sacrificing some individuals to death from unfavourable mutations. Bemoaning this imperfection of nature has, however, no place in a scientific treatment of this subject.
If we are serious about moving toward energy independence in a cost-effective way, we should invest in solar energy. If we are serious about cutting air and water pollution and reducing greenhouse gas emissions, we should invest in solar energy.
Science is bound, by the everlasting vow of honour, to face fearlessly every problem which can be fairly presented to it.
There are grounds for cautious optimism that we may now be near the end ofthe search for the ultimate laws of nature.
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