There are barriers to large change (Talk.Origins)

Claim CB902.1:

Evolutionists claim that biological evolution is extrapolated from the minor variations we observe. They ignore that there are barriers to large change.

Source:
 * Morris, John D., 2003. Dating Niagara Falls. Impact 359 (May), p. iv

CreationWiki response:

Wrong! Creationists have long held that, because of the laws of thermodynamics and the principles of information theory, the variations within Created kinds only go downward, not upward. That is, the increased variation results in a loss of information within each group so that each new group is generally weaker and less fit than its ancestors.

So Creationists do have mechanisms that limit variation: they are increased entropy and increased genetic noise.

Only if one assumes evolution to begin with.

Existem barreiras para grandes mudanças (Talk.Origins)