2 - a technical co-founder and a business co-founder. Since they don’t have enough money for proper lightbulb they use an old socket and lightbulb they found in the garage and since they don’t fit the technical co-founder builds a makeshift adapter from duct tape and aluminum foil. This actually works as long as you don’t tilt it too much. During seed negotiations the co-founders break up and the technical co-founder leaves.