Ready, fire, aim. Focus on making the idea functional before you waste time splitting equity for a theoretical business. After you get something tangible, it w

Ready, fire, aim. Focus on making the idea functional before you waste time splitting equity for a theoretical business. After you get something tangible, it will be clear who has the most passion and energy for this - at which point you can start formulating an equity agreement. In a way that is organic, as opposed to arbitrary.