1. Trying to solve important personal needs that might apply to a large number of other people. 2. Trying to solve obvious problems (e.g. death, disease, etc.)

1. Trying to solve important personal needs that might apply to a large number of other people. 2. Trying to solve obvious problems (e.g. death, disease, etc.). Initial "marketing" (word-of-mouth) is key. Will there be a niche to start with?