The next deep glaciation to begin
The ice age transition will happen without fail. We can count on that. We are close to the transition to the next deep glaciation to begin, though we don't know how close, close is.
The cut-off level
We also know that the trend towards the next glaciation has been progressing for 3000 years already, and is accelerating. We don't know exactly where the cut-off level is, beyond which the Primer Fields collapse and the Sun turns off. It may not be far below the level of the Little Ice Age. At the present trend, we may get to this point in twenty or thirty years, or fifty at the most.
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