Sentence examples for blind variation from inspiring English sources
Blind variation does not mean that individual organisms are blind or dumb: it might well be the contrary.
Darwin's theory of natural selection expunged purpose from the history of life by the principle of blind variation and selective retention.
Epigenetic changes are usually generated at a higher rate than genetic changes, often as a result of changes in environmental conditions, and the variation that is generated may have a higher chance of being beneficial than blind variation.
The story has been very widely cited and his four-step account of how one arrives at novel ideas has been adopted by those presenting the development of creative ideas in analogy with Darwinian blind variation, such as Donald Campbell (1987 [1960]: 99–100) and Dean K. Simonton (1988: 27 33; 1995: 468 86; 1999: 32 4); see Kronfeldner for a critical survey of the literature (2011: esp. 64 65).
One simple explanation to this was given by Campbell [43] who reformulated an original idea by Guilford [44] into a theory of "blind variation and selective attention".
Interestingly, positive symptoms are not necessarily related to problems in executive function, at least not to the same extent as negative symptoms [51], which indicates that in the creative individual "blind variation" might be affected without a concomitant decline in "selective retention".
According to accounts of discovery informed by evolutionary biology, the generation of new ideas is akin to random, blind variations of thought processes, which have to be inspected by the critical mind and assessed as neutral, productive, or useless (Campbell 1960; see also Hull 1988).
Cultural variation is neither blind (mutation) nor clairvoyant.
Efficacy studies aim to produce results with high internal validity by reducing both bias (e.g. using blinding) and variation (e.g. narrow eligibility criteria and a standardized treatment protocol) to increase the likelihood of detecting the hypothesized difference.
Design research has mostly been blind to such variations.
