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We humans should definitely stick with "what works." But on the other hand, it seems to me that we also ought to inquire into what doesn't work, from time to time. And try to reimagine our problems in new, potentially fruitful ways.

Well said! It makes no sense to keep trying to use the same tool when it is clear that it will not do the job.

246 - "Well said! It makes no sense to keep trying to use the same tool when it is clear that it will not do the job."

And that is how/why I started this whole discussion in the first place - it is clear that chemical rockets are not going to get us (people collectively) much beyond sending a few people into low earth orbit, and a few tiny robots to explore the solar system.

So we manage to build a permanent base on the moon. So what? There is nothing there beyond being a big, empty satellite in earth orbit.

We need break throughs, and the first of those needs to be a breakthrouh in 'thinking',so that we don't spend all our limited resources re-inventing the wagon wheel.