Intelligent Design says that there are patterns of design in nature that are best explained by intelligent design. This theory also claims that there is empirical evidence that design could be responsible for the origin of life and for the complexity of our universe and of biological and molecular systems. Intelligent design advocates don’t dispute that change over time can happen in limited forms—they just argue that undirected purposes couldn’t have produced all of that change.
Darwinian evolution, on the other hand, purports that life is the result of a random, purposeless process that has resulted through chemical reactions and natural selection. Some forms of microevolution—minor changes in features of individual species that take place gradually over a period of time—are pretty much uncontroversial. But neo-Darwinism says that all the organisms we see today are descended from a single common ancestor—and that it’s possible for entirely new species to arise from genetic mutations and natural selection.
For more information, visit The Discovery Institute.