Yquotes.com

 

Theoretical physicists live in a classical world, looking out into a quantum-mechanical world. The latter we describe only subjectively, in terms of procedures and results in our classical domain.
--
"Introduction to the hidden-variable question" (1971), included in Speakable and Unspeakable in Quantum Mechanics (1987), p. 29

 

John Stewart Bell

» John Stewart Bell - all quotes »

Similar quotes

 

Scientific realism in classical (i.e. pre-quantum) physics has remained compatible with the naive realism of everyday thinking on the whole; whereas it has proven impossible to find any consistent way to visualize the world underlying quantum theory in terms of our pictures in the everyday world. The general conclusion is that in quantum theory naive realism, although necessary at the level of observations, fails at the microscopic level.

 

Ravi Gomatam

 

Does life in some way make use of the potentiality for vast quantum superpositions, as would be required for serious quantum computation? How important are the quantum aspects of DNA molecules? Are cellular microtubules performing some essential quantum roles? Are the subtleties of quantum field theory important to biology? Shall we gain needed insights from the study of quantum toy models? Do we really need to move forward to radical new theories of physical reality, as I myself believe, before the more subtle issues of biology — most importantly conscious mentality — can be understood in physical terms? How relevant, indeed, is our present lack of understanding of physics at the quantum/classical boundary? Or is consciousness really “no big deal,” as has sometimes been expressed?
It would be too optimistic to expect to find definitive answers to all these questions, at our present state of knowledge, but there is much scope for healthy debate...

 

Roger Penrose

 

When there is freedom from mechanical conditioning, there is simplicity. The classical man is just a bundle of routine, ideas and tradition. If you follow the classical pattern, you are understanding the routine, the tradition, the shadow — you are not understanding yourself.

 

Bruce Lee

 

I'll tell you what classical music is, for those of you who don't know. Classical music is this music that was written by a bunch of dead people a long time ago. And it's formula music, the same as top forty music is formula music. In order to have a piece be classical, it has to conform to academic standards that were the current norms of that day and age ... I think that people are entitled to be amused, and entertained. If they see deviations from this classical norm, it's probably good for their mental health.

 

Frank Zappa

 

This fallacious result is not... a peculiarity of classical mechanics; it is given also by a very wide class of possible systems of mechanics. This being so, no minor modification of the classical mechanics can possibly put things right. Something far more drastic is needed; we are called upon to surrender either the continuity or the causality of classical mechanics, or else the possibility of representing changes by motions in time and space.

 

James Jeans