knockoutjs - bindings with parameters triggered on load

Question

I\'ve been doing a lot of knockoutjs lately, and I came across a strange occurence.

As you can see in this fiddle http://jsfiddle.net/hqXjv/ when you set up a binding to

Answer 1

The following executed the click function on load

click: clickSpan()

removing the brackets as below, the function was not executed onload

click: clickSpan

(this is explained in note 2 above but it was in cryptic form :-)