I think it's very unreasonable.
Jurors were shown CCTV footage showing Rahimi brush past several commuters as he led the girl to a toilet cubicle, where she was allegedly raped three times.
No one thought it was odd that a man was taking an unrelated young girl into the toilet? There aren't many young Afghan girls wandering around, so I'm presuming they could tell as she wasn't of the same ethnicity.
They were molesting her before then:
The girl said Rahimi asked her to sit on his lap five minutes into the train journey. Asked why she did so, she replied: 'I don't know. It's a bit hard for me to say no to men. He's bigger than me, stronger, and I can't do anything"
She said Rahimi kissed and sexually assaulted her while she sat on his lap, adding: 'He didn't ask if he could touch me or kiss me"
Would you be surprised to see two men with an unrelated girl sitting on one of the men's lap?
The girl said when Rahimi suggested going to the toilet, 'I was trying to tell him no', and described becoming upset during the alleged assault because it 'really, really hurt'.
Surely her distress would be visible to anyone when she's frightened and in severe pain?
I can understand people being frightened of a couple of thugs who think they can get away with assaulting a child in full view of witnesses. But surely someone could have approached the victim and asked if she was all right? She obviously wasn't all right, but that could have given her a chance to get away from the attackers.