You are being very unfair about Biles. She has proven, in the past and leading up to these games, that she could more than cope with it, in fact better than most. To the point maybe that those who couldn't do it quite as well in the team leaned upon her.
On the day, clearly no-one including her knew she would become unfit. Its erroneous in this case to suggest she shouldn't have tried. She is merely analysing what went wrong.
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