The Dual Vee Model builds on the V-Model to cleanly depict the complexity associated with designing and developing systems. In systems engineering it defines a uniform procedure for product or project development. The model depicts concurrent development of a system’s architecture as one Vee with each entity of that architecture as another Vee that intersects the architecture Vee. This clearly shows interactions and sequences in developing a complex system and a system of systems.

The Waterfall Model breaks up the development process into development phases. The name implies that design decisions flow from the requirements, implementation decisions flow from the design, etc. On a large project, many different people only work on each part. So a designer may ask, "What am I trying to design?" and the response would be, "You're trying to design something that will satisfy the product requirements." The builder may ask, "What am I trying to build?" and the response would be, "You're trying to build what was designed." etc.

Christopher Lee "Chris" Grant (born 13 December 1972) is a former Australian rules football player in the Australian Football League, and a legend of the Western Bulldogs Football Club. He was born in Daylesford, Victoria, Australia.

Grant was recruited by the Footscray Football Club (now Western Bulldogs) in the 1988 VFL Draft at pick number 105, and played his first AFL game in 1990 at the age of 17. Grant kicked 51 goals that season, the youngest player in VFL-AFL history to achieve this feat, to be the leading goalkicker for the club.

Over the following years, Grant established himself as a respected player in the half-forward position. He earned All-Australian honours in 1994 and 1996. He polled 27 votes in the 1997 Brownlow Medal, one more than winner Robert Harvey; however, he was ineligible to win the award due to a one-match suspension for striking Hawthorn's Nick Holland.

In 2001 he was named team captain, and was selected as a member of the Footscray & Western Bulldogs 'Team of the Century' in 2002. He missed the 2003 season to an ACL injury sustained in Round 1. He relinquished the captaincy at the end of the 2004 season.