A rational model of software is to design it quickly - the economic pressure to improvise presents an interesting challenge.
Developer testing is an important step towards accountability. It gives developers a way to demonstrate the quality of the software they produce.
The problem is, in software design, often the consequences of your decisions don't become apparent for years.
Agitator and the Agitar Management Dashboard lower the barriers to accountability in software development and increase the value of developer testing.
Received wisdom is that if you spend time up front getting the design right, you avoid costs later. But the longer you spend getting the design right, the more your upfront costs are, and the longer it takes for the software to start earning.