If I thought there was blood evidence in my bathroom, I probably wouldn't mind getting water all over the floor, and then wiping it up (and if I were compulsive, I'd do it with paper towels and get rid of all of it). Over and over. Like Lady Macbeth.
IMO.
According to Prof B., BK's favorite theories of criminal behavior were Rational Choice Theory and Script Theory.
So I keep trying to think what a Super Reasoner would do, having completed his rationally planned crime via his careful script. I never get far in my imagination, because just the things he'd have needed to do with his car (to keep blood evidence from getting everywhere) require some purchases and planning.
But let's just say that he went on home to Pullman after the murders, via that loop route, checking out what he could see as the sun came up, of the country out there. All of his kill stuff is still in his car at that point.
One goal he must have had was to remove all blood evidence from his own person (and get rid of whatever secondary clothing, if any, he might have had). So it does make sense that he might do a big evidence dump (or a smaller secondary dump) in that second drive on Sunday (the one where he arrives at 1122 King at around 9 am and then in Clarkston at noonish). Clarkston is only about 40 minutes from 1122 King, and then it's about 40 minutes back to Steptoe Apts. I wonder why it took him about 3 hours to get to Clarkston after leaving 1122 that Sunday morning.
Anyway, surely he had driven that route before? To check out possibly evidence dumping spots to put into his "script"? His theory doesn't account for mistakes such as leaving behind the sheath (or being seen doing a 3 point turn to go back to the house), but what does a Rational Choice person do in this case? He knew they'd be after his DNA (and it surprising how few hairs they found in his apartment - lots of cleaning). He obviously cleaned his car (many times). It wasn't reasonable to take his phone with him, though. I wonder why that was part of his script, I really do.
IMO.
QUOTE
"It wasn't reasonable to take his phone with him, though. I wonder why that was part of his script, I really do."
This question of his phone is a real head scratcher. I can think of only 2 reasons he would bring his phone.
1.) Ignorance. He thought turning it off was enough, didn't understand all the implications of bringing it.
2.) He actually did NOT plan to commit murder that night. Maybe did not plan to commit murder at all. Not planning a crime means it was safe to take the phone.
So then why take a knife and wear black clothes and mask?
Because he was returning to the house several times creeping through it, stalking, getting a thrill out of it. Disguised and with a weapon just in case he encountered someone. I don't think he had it planned out necessarily as well as we think - in regards to actually encountering an awake person.
Crimes like this normally show some type of escalation and creeping around in the house having that power and control over the victims is a good way to pave the way for this possible stalking behavior to have escalated.
He had opportunity. His phone pinged 11 times in that area late night/early morning.
He could have been simply doing another stalking foray but encountered awake victins, thus, unplanned, went into a killing frenzy because the occupants would likely call 911 for an intruder.
Remember, DM said she heard a male voice say something like "Don't worry I'm going to help you." And a roommate said "Someone is here."
If true, it sounds like Bryan was caught red-handed and his way out was to get rid of these witnesses to his late night burglary and stalking behaviors. A sure fire way to get himself arrested and ruin his life if he let these witnesses call 911.
No women were going to ruin
his life.
(Theory as to why he brought his phone)