Anthropic president Daniela Amodei recommended booking a trip with your startup cofounder. Andrej Sokolow/picture alliance via Getty Images Anthropic president Daniela Amodei shared her tips for picking a good cofounder. Amodei recommended traveling with them first and sharing a hotel room. "If you're like, 'Really going to need a vacation to recover from my vacation,' it might be the wrong choice," she said. If your cofounder relationship wouldn't survive sharing a hotel room, that's a problem, according to one Anthropic cofounder. Daniela Amodei left OpenAI with her brother, Dario, to launch Anthropic. The duo — along with their five other cofounders — built one of the most valuable AI businesses, one that investors are racing to get into . In a talk at the Stanford Graduate School of Business , Amodei offered advice on picking a cofounder. Interpersonal relationship dynamics "matter a lot more than you think," she said. "Dario and I have been fighting and getting over it for over forty years," she said.…