Mike, Yung....
1. Mike brings up the scenario of Ali climbing into bed with Brown, not cognizant that she is dead and importantly having blood on her.
2. Consider the less than significant amount of blood found from the point of the bed in Room 31 to the interior of Room 33.
3. Consider the amount of blood found on Ali ( socks, shirt, under the nails, etc.).
Ali had no other shirt to change into which explains that part. He probably didn't anticipate his socks being checked which covers that. The removal of material from under his nails was a first ( a forensic first, according to Dr. Flint ), so Ali can't be faulted for not cleaning under his nails....which, in his case and had he done so, would probably have been a first for the hygienically challenged slob.
If his socks came into contact with the blood on the floor in Room 31, two things happen.
1. He leaves some sort of mark on the floor from the point of contact to the interior of Room 33.
2. The place within the pool of blood on the floor should have some sort of indicator to show it was disturbed by a foot.
But his socks weren't described as being drenched in blood nor were easily noticeable footsteps found between the rooms which were only 3 feet away from each other.
This is only my interpretation of what I currently think should have been the visible result of Ali getting into bed with Brown....which with all due respect, I don't think he did.
I believe the blood on the front of his shirt ( the area where he claimed he had Alice Sullivan's menstrual blood on) came from him leaning over the bed....the shirt flaps coming into contact with Brown's blood and then him recognizing she was deceased.
The amount of blood on his socks, which wasn't monumental...otherwise, he'd have ditched them...try walking around in saturated socks for five minutes...came from him going over to the room in socks, not a case of him taking his shoes off and then hopping into bed with a woman he naturally thought was alive.
Putting it this way, if Ali had climbed into Brown's bed, I feel he would have had no recourse but to leave the area immediately. There's no way he'd stand around on Water Street and be picked up 20 hours later by Lang with the amount of blood he'd have acquired from direct contact with the blood emitted by her corpse.
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It's a shame that the class factor comes into play in this aspect of the case. First of all, Coroner Schultze probably gagged when he realized where he'd have to go on the 24th. Since the murder victim was a prostitute and not some member of The 400 ( established gentry of NYC), his standard operating procedure would be a lot looser in how he handled the task of summing up the situation. Allowing approximately a dozen people into the room while he was working was a recipe for contamination.