So what exactly is the Harvest?

[zenmaster]

From that viewpoint Zen, do you think a Wanderer could suffer a lifetime of strife and imbalance, fail to polarize sufficiently, yet still return to their home density after incarnation?

Yes. But on the other hand, if a positive wanderer had polarized sufficiently toward some relative balance that attracted a negative disposition, they might be harvested to some negative area.

We tend to think of polarization as some scalar concept with two directions. And that is true, but in 3D it involves only those aspects of self which are able, through prior programming, to be consciously acknowledged and worked with in this lifetime (Carla's 'personality shell'). Those aspects can run deep enough to offset any prior balancing toward one direction or the other. As Ra said, the further one has polarized, the easier it is to change polarities (because more of 'you' is involved in conscious action).

I don't think Ra ever said that Wanderers have to polarize in order to leave 3D (like Q'uo has so many times), but rather they would become karmically involved, forcing them to stay in 3D.

I don't think wanderers have to 're-polarize' to leave 3D either, would make no sense. On the other hand, many wanderers are also here to balance. Negative 4th and 5th dimensions offer potential balancing opportunities to the extent that wanderer has not yet accepted those aspects of self offered by those 'nexii'. 3D may offer the same opportunity if there is something still confusingly compelling about it.