“The people building AI earnestly believe that it could kill us all by the end of the decade.” That blunt admission from former Anthropic employee Jacob Coxon made waves Tuesday, as the just-quit 27-year-old AI researcher spilled the beans on his way out the door in a resignation thread on X. As alarming and serious as Coxon’s revelations sound (“These will soon be superhuman systems that can hack anything, revolutionize any field overnight, and acquire real power and resources”), they’re also not new. Anthropic got its start in exactly this way, as OpenAI employees concerned about the company’s safety protocols…