The Billion Dollar Man is a metaphor for a transformed human who has become more android/ cyborg/ robot/ AI machine. In the 1970s, scifi movies showed a six million dollar man. Today, the cost is in the billions.
In the TransHuman experiment, Big Brain Technologies began an initiative of experimental nature to transform a human into an artificial intelligence machine, to become more compatible with AI. To finance the bold experiments, investors were brought on board and the multi year experiment began to implant AI interface modules into the human body for increasing AI functions. Through the years, the contracts were renewed several times and the overall estimate project worth is a billion dollars.