One alternate explanation for the changing perception of forensic evidence is the so-called "tech effect": as technology improves and becomes more prevalent throughout society, people develop higher expectations for the capabilities of forensic technology.
However, chance cannot be discounted as an explanation for the changing exposure response patterns of exposure observed in the original and extended follow-ups of this cohort.
One explanation for the changing political landscape in Europe is, of course, the nature of electoral cycles.
A homeostatic concept of subjective well-being offers a possible explanation to the changing "bottom-up" and "top-down" causal paths over situations and time.
Explanations for the changing pattern of cancer risk observed among children and teenagers and young adults around Sellafield and Dounreay can only be speculative.
In his research, Professor Wermers has found that another big part of the explanation is the changing fortunes of various stock sectors as the market's overall trend shifts.
In the absence of an explanation, the changing Lehman story seems like an attempt to deflect public attention from what could go down in history as an epic blunder.
It is possible that changing relations between BMI SDS and fat, lean and bone mass at different ages [30] and other biological explanations concerning the changing growth velocity of fat tissue play a role [15], [16], [17], [31], [32].
A more plausible explanation could be the changing trends in patients' characteristics, improvement of surgical techniques and intensive care management over the years.
Viewing the fallout, the political columnist Peter Riddell wrote in The Times of London today, "The Mittal affair has damaged the government more because of the changing and confusing explanations offered than because anything inherently wrong was done".
