Please have a look at the following quote from a passage explaining D.O. and tell me what you think, from this link:
And specifically found in the section titled "3rd Link: CONSCIOUSNESS (vinnana)":
This relinking consciousness may be of different qualities, according to the kamma upon which it depends. In the case of all those who read this, the consciousness "leaping" into a new birth at the time of conception, was a human relinking consciousness arising as a result of having practiced at least the Five Precepts, the basis of "humanness" in past lives.
Am I reading this right? This seems to be stating that "all" humans attain human birth because they practiced "at least the five precepts" in a previous life. I understand that practicing the Dhamma leads to fortunate rebirth, but is it the only way to a human birth?
I realize that I'm touching on an imponderable here, but if it is the case that "practicing the five precepts" is a necessary condition for a human rebirth, as this seems to imply, then how would anyone ever be born human for the first time with the first chance to hear and practice the Dhamma?
I'm sure I'm missing something here, any help on this?...