Evolution is a Fact and a Theory

Schlagwörter:
Referat, Hausaufgabe, Evolution is a Fact and a Theory
Themengleiche Dokumente anzeigen

Referat
Evolution is a Fact and a Theory Larry Moran When non-biologists talk about biological evolution they often confuse two different aspects of the definition. On the one hand there is the question of whether or not modern organisms have evolved from older ancestral organisms or whether modern species are continuing to change over time. On the other hand there are questions about the mechanism of the observed changes... how did evolution occur? Biologists consider the existence of biological evolution to be a fact. It can be demonstrated today and the historical evidence for its occurrence in the past is overwhelming. However, biologists readily admit that they are less certain of the exact mechanism of evolution; there are several theories of the mechanism of evolution. Stephen J. Gould has put this as well as anyone else, In the American vernacular, `theory` often means `imperfect fact` - part of a hierarchy of confidence running downhill from fact to theory to hypothesis to guess. Thus the power of the creationist argument: evolution is `only` a theory and intense debate now rages about many aspects of the theory. If evolution is worse than a fact, and scientists can`t even make up their minds about the theory, then what confidence can we have in it? Indeed, President Reagan echoed this argument before an evangelical group in Dallas when he said (in what I devoutly hope was campaign rhetoric): `Well, it is a theory. It is a scientific theory only, and it has in recent years ...

Autor:
Kategorie:
Englisch
Anzahl Wörter:
2220
Art:
Referat
Sprache:
Englisch
Bewertung dieser Hausaufgabe
Diese Hausaufgabe wurde bislang noch nicht bewertet.
Zurück