Serial entrepreneur Randy Scott founded Novamin, a toothpaste using the bio-glass technology invented by Larry Hench (featured on "Glass that Grows," 9/25/18).  Bio-glass is a ceramic that essentially fuses with bone and cartilage in your body.   Randy says the key to starting a biotech company is "to fall out of love with the science" and instead understand the economic model that makes the invention relevant.   His father, "a prototypical entrepreneur," sometimes did well and sometimes did not, but his mother  successfully ran a small business.  Probably as a result,  Randy as a child was always "inventing fictional businesses in my head."