Seattle mountaineering guide Garrett Madison and Silicon Valley tech CEO Zachary Bookman were set to take on the world’s tallest mountain peak together. Instead, they’re mounting arguments against each other in court. The ongoing dispute, which has generated two lawsuits so far, stems from a trip to Mount Everest in which Madison, founder of Madison Mountaineering, contends that he was relying on his skills as an expedition leader when he cancelled any attempt to climb due to hazardous conditions.