The young Texas man who authorities said traveled to San Francisco to firebomb Sam Altman’s mega-mansion wrote a manifesto saying he must “lead by example” in killing the OpenAI founder, court documents show. Daniel Moreno-Gama , 20, is accused of throwing a Molotov cocktail at Altman’s $27 million Russian Hill home at around 3:30 a.m. Friday morning. He is scheduled to be arraigned Tuesday afternoon in San Francisco Superior Court on two counts of attempted murder and other felonies related to