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if you read the linked pnas article at https://www.pnas.org/doi/10.1073/pnas.2313374120 while remaining scientifically dispassionate I very much get the impression they are trying to warn us about the trajectory we are currently on.
You are correct though, the article doesn’t say that they are alarmed I have inferred that from following the subject in general.
Marineverse has a VR sailing game that is so good NauticEd recommends it when you’re learning to sail and I found it to be a really great simulation when i played it.
Also Greg at marineverse is really cool i had to chat with him to get an old copy of the game unlocked for my Quest 1 and he was super nice.