They said her injuries were too severe and could not be caused by a fall from the stairs. There was dried blood on MP's shorts, the stairs and the walls, then a new layer of blood on top of that. There were neurons in KP's brain that said she was alive for 30 minutes to 2 hours after the initial attack.
Mechanism of injury is an art NOT a science . . . that's the reason the prosecution implied MP used "something like" the fire poker to bludgeon his wife. I did not see the jury's info but if she had coup/contrecoup injuries (basically the brain banging around inside the cranium) that's more consistent with a fall NOT beating someone . . . unless of course he stood her up/hit her, stood her up/hit her, repeat 4 times, and then pushed her down the stairs. Blood dessication (drying) is a function of the blood amount, time on the surface, and the surface. If he went to his wife after the fall (which he says) held her for some period (which he says) went to call 911 (which he says) and then returns and touches his wife during the interval before EMS arrives (which he says) you will have blood in varying states of dessication. The blood on the stairs and walls would be in one state (depending of course on the surface, amount of blood, and time on the surface. If MP went upstairs for a phone, towel, or anything else he would track blood which would then produce blood stains in various states of evolution.
I don't know which neurons this article quotes but the wide confidence interval 30min to 2 hours after the initial
incident has no meaning outside of the context of the story. Furthermore, they probably mean 30min to 2hr from attack to time of death. The prosecution says MP bludgeon his wife and then allowed some period of time to elapse to increase the likelihood she would die (or maybe he just wanted her to suffer). The defense says (maybe b/c I didn't follow the case) . . . he did not find her immediately after the fall (both had been drinking heavily that night) he did not witness the fall so the time elapsed could easily be within the stated range but it provides no evidence against MP . . . unless of course his story makes it impossible to account for the time lag. Last I checked MP was not a doctor so his frantic (sort of) call saying his wife was dead doesn't mean she was dead but certainly it could have been a period consistent with evolving neuronal death.
The glove didn't fit dammit, he must be innocent! The jury system has it's issues...but I'll take it over, say, Iran's judicial system 
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