= 27d567bc2d48d9f40e9ccc20ea370b15)
gwern comments on Counterfactual resiliency test for non-causal models - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (78)
Presumably as phosphate mines get depleted it'll become profitable to stop pissing away all our phosphorus. Trade in urine was common in medieval Europe; now the yucky bits can be automated and hidden I see no reason it couldn't start again.
Not just medieval Europe - plenty of urban environments had such trades, like in China, and night soil trades were (and may still be) pretty much universal. The Ancient Roman urine trade gave us the still-current phrase 'money doesn't stink'.