IMO thinking about the physics, I believe if Chloe had her feet on the windowsill it would be less likely for her to fall forward if they were planted against the sill. If her feet were over the windowsill she'd have less leverage but maybe enough to prevent her falling forward because her body would more or less be at a 90 degree angle to the sill.
If her legs were dangling below the railing then she'd in essence be "top heavy" and moving her upper body forward to <cough> get a better view would be much more likely to propel her forward. But that would be determined by the length of her leg from the knee to the hip plus whatever height difference there is between the railing and the bottom of the window (the sill) plus the length of her knee to her feet and adding the velocity of her body moving forward.
What we do know though is that whatever position/angle she was in was enough to propel Chloe out the window as she leaned forward. So yes, it's likely SA leaning forward also helped Chloe to lean forward. IOW, he may have pushed her out as he leaned in to "get a better view."
I don't believe SA did it on purpose but I'm quite convinced he ignored common sense, which to me means he may or may not have known the window was open. Winkleman is claiming that there's no way to tell definitively whether he knew or not so all we can do is go by SA's own testimony.
I disagree. I believe between the video, expert forensics and testimony and eyewitness testimony SA's actions will be discernible.[/QUOTE
Just looking at the pictures of the open window make me dizzy. For SA to place a small child up there is grossly negligent, which explains why the PR prosecutors charged him with negligent homicide - which means that the accused was not just negligent, but grossly so.