Do you mean that the limit is so high that the heat death of the universe (and even the collapse of the false vacuum, see https://arxiv.org/pdf/1707.08124.pdf) would have occurred by the time said limit is reached?
Do you mean that the limit is so high that the heat death of the universe (and even the collapse of the false vacuum, see https://arxiv.org/pdf/1707.08124.pdf) would have occurred by the time said limit is reached?