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New paper alert! tl;dr: the seafloor of Europa is probably tectonically inert, meaning little to no active fracturing that could expose fresh rock to seawater. Without such water–rock reactions the prospect for there being life within Europa just took a big hit. A thread:

I'd be a bit careful about saying "it took a big hit". We don't know how life started on Earth, let alone if similar conditions are required elsewhere. You very well could be correct, however, I'd personally would add many more qualifiers to statements like that.