LastTrad,
Let me clear up what I think. I don't know why you're getting bent out of shape here; you're the one who keeps saying that this-or-that in regards to Limbo is dogma. I keep saying ALL details of Limbo are speculation. It can probably be argued that the idea of Limbo is doctrine, but we can't say for sure who is or isn't there.
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1. You have argued that you "never heard" of adults going to Limbo. I'll counter by saying I've never heard the term "limbo of infants", which implies adults can't go.
2. For the 3rd time, Pope Innocent's quote on Limbo COULD include adults, since he does not say infants only, but says that those who die with only original sin go to Limbo.
3. On the thread of 'salvation for native Indians' there was some saint who said that God could leave some "good natured" Indians in ignorance as a blessing because while they are good-willed on a natural level, He knew they wouldn't accept the Faith, so He did not have it preached to them, so they wouldn't be guilty for this grave sin. Thus, they could die and their eternal suffering would be minimal. ...This is obvious speculation, but it's the line of thinking that I am arguing.
4. It's possible for an unbaptized, above-the-age-of-reason person to die without mortal sins. Like a 7-10 year old. Or even an adult "ignorant native". Is it likely? No. Possible? Yes.