premise: Salli Elise Richardson (born November 23, 1967) is an American television and film actress and director. Richardson is known for her role as Angela on the 1994 hit comedy/action film "A Low Down Dirty Shame" and for her role as Dr. Allison Blake on the Syfy comedy-drama series "Eureka" (2006–2012).
hypothesis: Dr. Blake starred in Eureka for seven long years 
reason: Dr. Blake, a character played by Salli, was a star character in Eureka from 2006 to 2012 (6 years) not 7. The model probably missed it due to it not connecting that 'Dr Blake' is Dr. Allison Blake