Three geologists stand at the foot of Mt. Rushmore. The first geologist says, "This mountain depicts perfectly the faces of four U.S. Presidents, it must be the work of a master sculptor." The second says, "You are a geologist, you should know that all mountains were created by natural forces, such as volcanoes and plate movements, the details were then sculpted by erosion from water and wind. How could you possibly think this was the work of an intelligent sculptor? Only a person completely ignorant of geophysics could think those faces were designed."
The third geologist says to himself, "I don't want to be seen as ignorant, but the faces in this mountain sure do look like they were designed." So he thinks a moment and says to the second geologist, "Of course you are right, these faces were sculpted by natural forces such as erosion. Only an ignorant person would think they were designed." Then he turns to the first and says, "But what a magnificent result, there obviously must have been a master sculptor standing by and watching."
More than just watching.
We are at a dangerous point in our knowledge today. We don’t have the ability to actually trace a hypothesized tree of life yet, but remain subject to educated guesses. The new science of DNA has already forced reorganization of many of our posited evolutionary trees and the corresponding biological classifications. We could conceivably get into a position that says entire branches of our “evolutionary tree” look like a graft from heaven knows where.