Reincarnated?

[zenmaster]

It has been speculated that extremely materialistic, greedy people often reincarnate as a starving child in a 3rd world country. Karmically, it makes sense.

No, this would not make sense. One wouldn't incarnate in the first subdensity, precisely because there would be little or no learning opportunity. This should be obvious.

Do you not think it's possible to learn the importance of sharing, through immediate family, in as "do or die" a context as starvation?

No, because when you are surviving at the most basic level possible there is no context like you are creating. Self would be seen as an extension of other self.

Or alternatively what about from one planet to another, where the first subdensity has different learning opportunities maybe? To learn to handle survival in some new way...like wandering

The planets are going to have the exact same conditions for learning the first subdensity lessons, just like they would for the lessons required to graduate to 4D. A new way is not important to learning because the lessons are the exact same regardless of how they are appreciated.