rockylarson,
Thank you for taking the time to respond. You have provided a subject of conversation with out dog friends, almost all of which have working dogs.
For most people, this statement from the article, "Notice that all commands are designed with a single syllable ... " may ring true. But it is not true in our world. We do use a lot of one-syllable commands - probably the majority of our commands. However, we use a lot of multiple syllable commands.
For example, in NADAC agility we encounter many "discriminations." Usually, a contact obstacle and a tunnel are side-by-side. The commands we use are, "Come, walk it" and "Out, tunnel." The "come" and "out" might be interchanged, depending on the positioning of the obstacles relative to the dog's path.
Our dogs seem to be able to make fine distinction. We use "left" and "right" to mean spins. We use "go left" and "go right" to mean direction changes.
I will be interested to see what others and our dog friends think about this.
Tom