Just wondering, how long did your blindness last?
OP claims after coming in with two fans which he apparently was able to place without incident, close the sliding doors, blinds and curtains, then was able to make his way to the other side of the bed to get his gun from under the bed that RS was supposedly sleeping in though he later says he'd just spoken to her moments before(apparently all done as quietly and invisibly as a ninja as it didn't even make RS question what he was doing which should have made him question why she didn't), then proceeded down the passageway to the bathroom when he saw the window was indeed open and somehow equated that to mean he had someone hellbent on killing him and RS hidden in the toilet room ... and then decided that he would loudly warn this someone to get out of his house and for RS to call the police ... seconds before he opened fire on the closed door until he could no longer hear anything but still felt the need to yell once more at RS to call the police before he went to check on her....
I'd laugh if it hadn't killed someone.
My blindness lasted about 10 seconds until I gradually was able to see that my spouse was in bed. But even then it was weird. There was little depth perception. I.e., I couldn't tell there was a body under the covers. I could only see my spouse's head.
I was very surprised by this experience. It made me realize more than anything how OP's entire defense is one of abject stupidity. He can't have it both ways. It's not that he just didn't notice Reeva in the bed. He couldn't notice her because of the pitch blackness.
In other words, he would know that he couldn't know if she was in bed or not. If you take him at his word, OP must get a gold medal for stupidity. Shooting a person in his toilet stall four times before it "dawned" on him that person could be the woman who was in his bed is not reasonable.
If it were reasonable we'd hear about husbands shooting their wives every night.