Unless he claims he was set up...
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yeah.
it could have been one of the criminals participating in his dissertation project??
he could have been documenting the actual perp's actions for his doctoral program?
maybe he loaned the perp the kabar?
maybe he was just the driver of the get away car???
So, in your theory he convinced a dumb criminally minded person to murder 4 people?
Kohberger (K): Hey man can you do me a solid?
Dumb Criminal (DC): like what?
K: I need you kill these 4 people, but the really important part is I want you to journal all of your emotions you feel from the time you enter the house until you leave.
DC: sounds cool but what’s in for me?
K: they might be wearing slinky night gowns?
DC: what else?
K: you get bragging rights.
DC: okay...
DC: but won’t they catch me?
K: no they’ll think that I did it. Here, use my knife.
I think this theory is a bit of a stretch. Just sayin’