After Lindyâs team analyzed more than a hundred hours of observations and sixty interviews from ten start-ups, they found the best CEOs shifted between accentuating and flattening the hierarchyâand the worst ones treated the hierarchy as static. When one CEO was asked if her team was flat or hierarchical, she explained, âYou have to have both. If you donât have that flat piece where youâre taking everyoneâs input, youâre dropping expertise on the table, and if you donât have a hierarchical piece, then youâre just heading in all different directions.â The best leaders âactivatedâ their authority to squelch destructive conflict, when discussion and debate became repetitive, and time pressure necessitated immediate decisions. These flexible leaders âflattenedâ the hierarchy when creativity, problem-solving, and buy-in were top priorities. Another lesson from Lindyâs research is that to avoid confusion and missteps, leaders and teams ought make explicit when to activate or flatten the hierarchy. Navy SEALs take off their stripes. In one start-up Lindyâs team studied, when the CEO wanted everyone to speak, he passed around a football, and âwhoever has the ball has the right to speak and everyone needs to listen to them.