This movie Negates the first 2

Rating: Null/10 (20 February 2006)

Terminator 3's plot negates the first two.
If Claire Danes Character's father is the key to everything, than why didn't the future John Carter send back the terminator to kill him. Or at lease warn his mother.
In the first 2 there was never any mention of Claire Danes character. I thought the film missed Linda Hammiltons character.
The whole point of the first 2 movies is to stop the machines and Sky net. Why couldn't they create a virus to take down skynet.
As a whole this film is a poor follow up the the Terminator 2: Judgement Day, which in my opinion is a sci-classic.