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I think it's probably an Occam's razor argument against introducing a fifth force--it's seems a lot simpler to assume that dark energy works within the context of general relativity (or that general relativity isn't 100% correct at large scales) than it is to introduce a new force just to account for those effects.
Thanks Peppercorn,It is not a matter of adding anything, just a matter of having a clearer perception or recognition of what has already been identified. As an organisational psychologist, heping people to cope with the uncertainty of change is a critical part of my work. Uncertainty is elusive in that it is often felt rather than seen. What I'm looking for is a recognition that uncertainty is an inherent part of Nature and a vital one at that. From what I have read, uncertainty is ubiquitous. It is apparent at the microscopic level, the macroscopic level and the cosmic level. It is measureable. Possibility is the basic measure, as previously discussed, and it is a simple measure that anyone can understand, and this is important. If uncertainty were acknowledged as the fifth dimension, it may help people to come to grips with it better.Until recently, religion provided a mechanism for people to cope with uncertainty. With the secularisation of society, a coping void has emerged. Developing a psychology of uncertainty that is not just based on anxiety reduction has great potential. Indeed, what is often seen as a personality trait may simply be a response to uncertainty of which I have identified seven major ones ~ rigity, avoidance, control, spontaneity, anticipation, initiative and serenity. The good news is that a person may LEARN to expand the response repertoire and become more adaptive.A major theory of human motivation could well emerge from having a deeper understanding of uncertainty. Separating environmental uncertainty from psychological uncertainty was a major breakthrough in this regard.If there has been a paradigm shift, it would help to make it more explicit.Regards, Clem.
Quote from: sandstone on 27/08/2010 00:51:48...Separating environmental uncertainty from psychological uncertainty was a major breakthrough in this regard....paradigm shift....Not sure how we got of on the psychology of uncertainty here (which has nothing at all to do with quantum uncertainty.)
...Separating environmental uncertainty from psychological uncertainty was a major breakthrough in this regard....paradigm shift....
From what we understand of gravity, it drops off at a rate of the square of the distance, but it never ever falls to zero. With all the matter in the universe gravitationally attracting itself the expansion of the universe should be slowing down but it is in fact speeding up. It's like tossing a ball up. You fully expect it to come right back. What would you think if you tossed the ball up, watched it slow down as it reaches the highest point, then instead of stopping and falling back into your hand it takes off like a rocket. That would be really weird!
... will turn out to be massless electromagnetism.