I will just say this Jim. I understand your hesitation and I know nothing of what your background is, but if you can understand what a professional fire invesigator goes through to attempt to be factual, then you probably know how much goes into testing and what it takes to become a well know figure within the community of fire investigation. Then I will just tell you this, although the house was bulldozed as Mr. Lintini testifies to, they do know almost exacltly when the fire started, by way of 911 calls, banks records of the accused and a time line of how long it takes to drive from her house to the afor mentioned bank, and as to when the fire department arrived. As well as what the house was constructed of, considering the husband of the accused was a contractor and built the house, they have blue prints and many pages of testimony from him as to what was in the house, as well as a babysitter who was at the house the day prior who testified as to what was in the house. All that together added to the decades of trial and error of professionals, they know exactly, or I would imagine know how quickly a fire would and could burn with or without an excellerant. To say it's an exact science wouldnt be a far stretch in this case. At least in my opinion.