The only hope is the banging at 30 mins intervals- when it’s that regular it must be human. It’s going to be awful if it suddenly stops. Friend’s sister is friends with the 19 year old boy, said he’s really lovely 
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I read something really interesting about this (no matter their wealth I also hope to god they’re found), about the psychology of empathy, how this is 5 people and it’s easier to relate to 5 people going through this (in real time no less) than 500. That’s a very very brief summary but interesting I thought.I can't stop thinking about the fact they might still be alive. I know it's wildly impractical but you'd want to be sent down with a cyanide capsule in case something like this were to happen.
It's perfectly possible to feel sympathy for the very wealthy. Some of the behaviour I have seen online has been reprehensible. Don't tell me I have to make a choice between feeling sorry for this and the migrant boat in Greece that sank - empathy, thank God, is not a finite resource.