[zmgsabst]

Your first link says that in 400 years, we’ll need a second location to continue growing.

And…?

I think that actually supports the other person’s view: if your entire argument amounts to “in 400 years, we’ll need to have space stations or settle Mars with nuclear!” that isn’t really an argument against growth now.

[c22]

The link predicts that in 400 years we reach a growth limit at the 100% solar exploitation of earth's entire surface area, so it's likely we'll have to get off planet well before that.

It goes on to predict that to maintain

> 2.3% annual energy growth for 1350 years from the present time

Will require total exploitation of our local star. This is a tight timetable to construct the relevant dyson sphere, even with the associated gains in engineering/construction efficiency and expertise.

There are additional cogent arguments that bypassing the solar energy requirement (with e.g. nuclear methods) will pose significant challenges in radiating the waste heat within ~1400 years.

These projections are based solely on the rate of growth, so it seems clear that while we may be able to keep growing indefinitely, the rate at which we do so will need to asymptotically approach zero.

[zmgsabst]

I couldn’t have predicted 2024 from 1624 — so I assume I’m similarly incompetent at forward predictions of 2424.

Trying to guess from 1AD what 2024AD would look like would make me sound like I was speaking myths — so again, I have to assume I’m similarly unable to guess at the timeline (4000AD) where we’d run out of galactic solar energy what our existence would be like.

There’s nothing in my grandchildren’s grandchildren’s time that would prohibit growth — and I’m okay admitting I lack the wisdom or capability to solve problems on so grand a scale. The links posted bolster my position that the “limits of growth” are irrelevant to me, almost entirely.

To the extent that they may impact my great-great-great-great-grandchildren, I think they’ll be better able to handle the troubles of their time with the benefits of a robust economy, vibrant society, and abundant wealth. Nothing you’ve posted suggests that I should try to limit growth or that anyone would benefit from the attempt.

[c22]

Certainly--I am still investing in the stock market.

However, this thread is about detecting alien civilizations in far off star systems so I'm not sure why you'd expect any of this conversation to be relevant to your immediate situation.