For example , the Manhattan Project involved more than 130,000 people at an estimated cost of nearly $24 billion in 2008 dollars .
This complexity evolved from the increasing complexity of weapon systems starting in the 20th century .
The Manhattan Project involved more than 130,000 people at an estimated cost of nearly $24 billion in 2008 dollars .
This complexity evolved from the increasing complexity of weapon systems starting in the 20th century .