Saying you are absolutely right, when talking about the mathematical formular used in the hand method to determine the transfer of heat from the source of the heat to the target body an individual involved with the development of the CFIcalcualtor stated in a deposition that the mathematical formular had a 20 -30% error rate. Are these the equations used in the calculator and other models? The error rate he was talking about was strictly the formular and not the different data imputed. He did not use the term uncertainty. Was this person wrong?

I all am interested in is the fact this new version of the CFIcalculator is coming out. The calculation using this instrument will start showing up in court. Call it what you want, but I want to know how accurate the results are with all the impute data being correct. The second question was this calculator subjected to testing and peer review. By testing I am talking about blind testing to were the person without any knowledge of the conditions that took place during the fire investigates the scene, puts the data into the calculator and comes out with results. These results are the compared to the actual data collected during the fire.

Jim Mazerat
Forensic Investigations Group