[Rippin]

The problem is there have been no sudden changes except extinction events from the Cambrian “explosion” until now.

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The point here is that creationists have taken the position that each ‘kind’ of animal was distinctly created while evolutionists have insisted that there is common descent. If there is only random mutation available to create new genetic material the process is unimaginably slow - while if there can be some guiding, the time required for a change could be dramatically reduced.

The sudden changes in the fossil record are a bigger problem for random mutation than for guided mutation. If a natural capacity can ultimately explain rapid dramatic changes then the creationist will no longer be able to say that sudden jumps in the fossil record support special creation of kinds.

[js1138]

The “sudden jumps” you have in mind involve millions of years or hundreds of thousands of generations. The varity of morphology seen in dogs bred over the last thousand years is greater than the “gaps” in the fossil record for most lineages.