Originally posted by Herlock Sholmes
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Obviously, I agree with your final statement. Basically, Dr. Phillip's estimate is not inconsistent with the witnesses statements and therefore cannot be used to suggest the witnesses "lied", "were mistaken", etc. There is no conflict, and therefore his estimate is not something that points to the witnesses being inaccurate in any way.
Sure, they still could be, the fact that Dr. P's statement is consistent with them doesn't mean they spoke the gospel. There's clearly some fine detail conflict between the statements when one goes over them with a fine toothed comb, but as we know, that too is to be expected even if the overall testimony is correct.
It is generally more difficult to describe "margins of error" with respect to witness statements because a lot of what a witness states is qualitative in nature. Measurements or estimates of duration are easy things to work with because they are quantitative values, we just do the maths and get values that represent the central tendency and the error ranges, in nice easy numbers. Witness statements tend to be more qualitative (i.e. if they misreport the van as light blue rather than white - it's always a white van isn't it? - then how big is that error? It's the wrong colour, but is it bigger/smaller than someone else who describes it as a silver van? What about a white station wagon? What if they say Ford rather than Chevrolet? Those are errors, but which is the bigger? What colours should we expect as our margin of error if the van is white? what about blue vans? Or red vans? What's the +- range on those? I have no idea. Certainly it is possible to look at the distributions of such errors, but that is a really big project, and would be very time consuming, particularly since one would want different "error ranges" for daylight, twilight, and dark conditions - and what about fog? or ....) These are errors, but they are harder to quantify.
While I've not looked as much at such types of errors, barring a witness being deliberately misleading, from what I recall the errors tend to be most commonly in the fine details (i.e. colour, make of vehicle, etc), with temporal "re-ordering" of closely occurring events (i.e. I cut up my veggies to go with the roast in the oven, then turned on my computer, and that's when I heard the noise outside .... but it turns out they turned the computer on first, then dealt with the veggies and roast, and heard the noise at that time. If the time the computer was turned on was used to timestamp when they heard the noise, that swap in detail of the order could be very important to the time line. But regardless, that sort of "reordering" happens, but it doesn't mean the witness is lying, nor are the overall events wrong, just an error in temporal sequence. Is that a big or little error though (not the impact on the investigation, just how "big" is a temporal swap compared to misremembering a van colour? How do you quantify those in order to compare them?).
I have no doubt some of the witness details are wrong. I can't say which, but I see no reason to suspect any of them of deliberately misleading the investigation. I see no basis to suggest Richardson was lying about sitting on the steps and fixing his boot. I see no basis for suggesting Cadoch did not hear the sounds he said he heard, and no basis to suggest he didn't make 2 trips, separated by a short interval. I see no basis to suggest Long didn't see a couple outside Hanbury street somewhere between 5:15 and 5:30, and given she identifies Annie later, odds are in her favour - but of course it's not definitive proof and I'm not suggesting it is. But combined, these witnesses suggest a ToD of around 5:25.
Dr. Phillips provides an estimate of 2 hours PMI, which Baxter tells us refers to 4:30, just under an hour over the witness ToD. If we presume he used temperature readings and the calculation available to him, then we can use the corrected calculation suggested in the thesis (which he could not), which recalculates his interval to be 1.5 hours, or 5:00 o'clock. That is now only out by 25 minutes, inside the very best we could do today when we have all the necessary information correctly measured. As such, none of the witnesses create such a conflict that we need to dismiss any of them as being clearly unreliable, we just need to tidy up the fine detail issues to try and sort the events into a plausible story. And that's trivial, Richardson checks the backyard, fixes his boot, and leaves. A short while later, Annie and JtR are spotted by Long as they talk outside of Hanbury street. Long passes them and goes on to the market, and shortly thereafter Annie and JtR go to the backyard. At that time, Cadoch is getting up and preparing to start his day. He goes out to the loo and hears Annie and JtR conversing, perhaps continuing negotiations. Cadoch goes back inside. He returns to the loo as he's not particularly well, and then goes back inside and on towards work. JtR, at some point strangles Annie and disembowels her, during which a noise is created against the fence as Cadoch returns back inside and then heads to work. JtR, leaves the scene, failing to close the door as he exits, and dissappears. Cadoch may have left prior to JtR and so does not see him in the street, or JtR leaves first and is out of sight when Cadoch exits for work.
It's a simple, and tragic, story. And the bits of it we get from the different witnesses create that simple, tragic, story that is so mundane and typical of serial murder that it is treated as implausible, so that in it's place we can have the excitment of a witness who lied, or a body in plane sight overlooked, or a misidentification leading the police astray, or a body carried in from a Royal Coach and deposited in a random backyard. Those are the alternatives, those are the theories that need to get rid of three witnesses, and that need Dr. Phillips to be accurate within minutes so that he can conflict with the witnesses. But the reality is, there are no major conflicts, and the story is mundane, sad, and tragic.
- Jeff
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