Why are these called 5 way binding posts? I count four!

There are some amusing answers here, but, my earlier posting was not speculation-this is what I was told by the distributor of binding posts.  He loved to test people on this because few actually know.  I got four right—bare wire, spade lug, banana jack and pin jack—but I did not guess double banana (or dual banana) jack.  I like the alligator clip idea.  Perhaps someone can claim their product is a six-way binding post, or even more.  At least this would have some basis in fact, unlike the cell phone companies claiming “10 k” coverage (10 is bigger than 5, right? Never mind that 5k denoted the generation of development).

When so many threads on this forum end up argumentative this one actually got humorous and I read every response. I especially liked...!

"Pretty sure the post is just bragging about its abilities." 

@nonoise 

  +1

  But what a way to go! 

@larryi is correct. We always used to use double banana plugs in the day as they saved time, but the posts have to be the correct distance apart.

Okay. It’s time to get real here.

The term "bind" is defined as to "tie or fasten (something) tightly." Anyone who’s tried to shove a Dyson in between a wall and their speakers, whacked a cable, and dislodged a banana connector "binded" to their speaker knows that it is not fastened "tightly."

A more correct engineering description of a banana connection is referred to as an "interference fit". See linked video.

https://www.youtube.com/watch?v=KwpEgwiX850

Tithes may bind. Banana connectors do not.

I vote for 4-way + 1.