When two people use the same dichotomous key to identify the same object is it possible for them to have different final answers?

The word Dichotomous comes from two Greek words that together mean,"divided in two parts". A Dichotomous key consists of a series of two part statements that describe the characteristics of organisms. At each step of a Dichotomous key the user is presented with two choices. As the user makes a choice about a particular characteristic of an organism they are led to a new branch of the key. Eventually the user will be led to name the organism that they are trying to identify.

Yes, the key factor is grade level experience