Challenge--find the error in the Modern Synthesis

According to the Modern Synthesis, the evolution of a complex organ such as an elephant’s trunk arises through a series of logical steps. Could there be an error hidden in them? Follow along as I trace through the seven steps.

My conclusion: only the first two steps are not flawed. Step 3 may not in practice be true. The rest are wrong. There is precious little of the Modern Synthesis left; it is not merely flawed, it is a fairy story along the lines of Jack and Beanstalk.

Oops! I've given away the answer! Well, take the challenge anyway, and see if you agree with me.