Originally Posted by gideongallery

your missing the point in a pre-destination paradox effect preceeds cause.

Your looking at it as a cause /effect situation which does not apply.

In a history is immuntable senario (pre-destination paradox) you must look at the time stream from a period after loop is completed, with every event in the loop considered to be a historical event.

The start of the loop is skynet sending the terminator into the past.