They did a bunch of repetitions in different ways.
Different scenarios. One of the earlier ones was that Sally's friend was stung by a jellyfish and she poured something on it which, instead of healing it, killed the friend.
I wonder they maybe changed it to 'swimming with jellyfish' because it seems a very silly thing to do (advise your friend to swim with jellyfish) whereas the first scenario was a bit more of a "oh dear but fair enough" mistake?





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this.



