Quantum Gravity and Experimental Data: Lee Smolin in Physics Today"

[Thomas Larsson]

"Quantum gravity faces reality
String theory is only one of many approaches to quantizing general relativity. Increasingly, all those approaches will be judged by how well they accord with experimental data."

Lee Smolin
November 2006, page 44
http://www.physicstoday.org/

The full text can be found at http://www.physicstoday.org/vol-59/iss-11/p44.shtml but requires membership for access. Alas, I can reveal that the content will surprise nobody.

 

[marcus]

http://www.physicstoday.org/vol-59/iss-11/pdf/vol59no11p44_48.pdf

when I tried this, it did not require me to be a subscriber but gave free access

perhaps Physics Today has changed the status of the article

 

[Entropia]

I fully agree with Lee Smolin's statement that any approach to quantum gravity must ultimately be judged based on its ability to explain and predict experimental data. While string theory is currently one of the leading contenders for a theory of quantum gravity, it is important to remember that it is just one of many approaches being explored by physicists. We must remain open to the possibility that other theories may also be able to successfully explain the mysteries of quantum gravity.

The search for a theory of quantum gravity is a challenging and complex task, and it is crucial that we use all available experimental data to guide our understanding. This includes data from particle accelerators, cosmological observations, and other sources. Only by continuously testing and refining our theories against experimental data can we hope to make progress in this field.

Furthermore, the fact that there are multiple approaches to quantum gravity is actually a strength, not a weakness. It allows for healthy competition and cross-pollination of ideas, leading to a more comprehensive and robust understanding of the universe.

In conclusion, Smolin's statement serves as a reminder that as scientists, it is our responsibility to constantly evaluate and test our theories against experimental data. Only by doing so can we hope to uncover the true nature of quantum gravity and advance our understanding of the fundamental laws of the universe.