There are a few activities that, arguably, comprise the bulk of science.
<p><img src="http://jayunit.net/assets/2008/3/21/prp-slide1.png" style="border: 1px dashed #ccc; padding: 10px; " /></p>
<p>They are, of course, not linear.</p>
<p><img src="http://jayunit.net/assets/2008/3/21/prp-slide2.png" style="border: 1px dashed #ccc; padding: 10px; " /></p>
<p>And each one generates many artifacts.</p>
<p><img src="http://jayunit.net/assets/2008/3/21/prp-slide3.png" style="border: 1px dashed #ccc; padding: 10px; " /></p>
<p>...many, many, many artifacts.</p>
<p><img src="http://jayunit.net/assets/2008/3/21/prp-slide4.png" style="border: 1px dashed #ccc; padding: 10px; " /></p>
<p>Wouldn’t it be nice to keep track of all these? (Especially in a distributed team!)</p>