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Here is my point, lets just say that Nest did scientifically, without a doubt, and without any question whatsoever determine that the blood over the bed, over the railing, and on the staircase wall was arterial spurt. And for the blood to be arterial spurt Reeva's heart had to be beating, no doubts or questions about it, for this post anyway. Then why on earth would Nest very casually and comfortably concede to Mr. Roux that the blood over the bed may not have been from arterial spurting, and go on to say it could also have been from blood cast off of OPs hands. That does not make sense, and goes against Nest using scientific principles, calculations, observations, and forensic computer programs to definitively make any determination about arterial spurting that is incontrovertible. It opens the door to question Nest's opinions about what was the cause of the blood over the railing and on the staircase wall.