Since I started the book I have been listening to Kate Nash’s new album Made of Bricks. I like it. Very easy listening.

Now, I spend a lot of time with my clients trying to give them the confidence to attack different problems. Initially, it looks like I am trying to make my clients brave but, mainly, I use a trick from cognitive psychology called reframing. Reframing doesn't remove fear, it just shows the patient (my students) there is nothing to be afraid of. Or, like Nash sings in Birds:

This is a general recommendation if you're planning to use a tool like Pex in the future: make sure that preconditions (i.e. parameter validation) fails in a different fashion that other assertions.

Here's a snippet that shows the problem:

// don't do this
void Clone(ICloneable o) {
     Debug.Assert(o != null); // pre-condition
     ...
     object clone = o.Clone();
     Debug.Assert(clone); // assertion
}

Maybe yes, maybe no, I guess it depends on the reviews... Have you reviewed it?

http://submissions.agile2008.org/node/2766