[munger]

I know you are just making a point with the circular saw metaphor, but for those wondering here is some good info on how to use a circular saw as safely as possible:

http://www.docstoc.com/docs/87338746/CIRCULAR-SAW-SAFETY-AND...

http://carpenterbooks.com/userFiles/556/frame_table_mw_pdf_2...

Even still, as the safety guide states, "Be careful, making one small mistake with a circular saw could be the last thing you ever do in your life"