She agreed with the defense attorney's bullshyt "anything is possible" theory. Obviously in her expert opinion she didn't believe that Zimmerman's head hit the concrete more than once contrary to his claim, which is why you're trying to discredit her.
Regardless of you whether you feel like he was justified or not, the point is that he profiled Trayvon. The marijuana BS is inadmissible ruled by the judge as rightfully so. Weed stays in your piss for 30 days, I suspect that it's detectable in the blood even longer. Trayvon was walking home, he wasn't standing around tweaking off of weed. Let's not play games. We know why Zimmerman profiled Martin. A black guy was suspected in breakin in houses and Trayvon "fit the description" so to speak. There's a reason that his defense team can't come out and say that.
You sound like you're a member of Zimmerman's defense team with this "anything is possible" bullshyt. The lengths that you have to go to believe Zimmerman's story should tell you something. If Martin was actually doing all of the things that Zimmerman claims(punching him repeatedly, grabbing his head bashing it against the cement repeatedly, trying to smother him, ect) then there certainly should've been some kind of Zimmerman DNA on Martin's hands. Instead of jumping to believe these elaborate highly unlikely scenarios, why not just entertain the common sense conclusion that Zimmerman is lying?
That certainly isn't evidence that Trayvon attacked first or initiated tw scuffle. Maybe Zimmerman flashed on Trayvon. Maybe he walked up on Trayvon and pushed him, tried to to detain him, ect. He did see him as a "suspect" even after killing him.
Yes, he saw his arms going downward not throwing punches or bashing his head against the cement. Maybe Trayvon was on top trying to prevent Zimmerman from grabbing his gun ad that's why he was screaming for help. You're going out of your way to try and defend and justify an armed man killing an unarmed 17 year old in self defense despite plenty of evidence that suggests otherwise. That should tell you something about yourself.