Its not for side effects it's for direct effects. Side effects are bonuses. If you disagree that direct effects are useful and think we should never leave the planet then that's a different discussion.
That's exactly the discussion, though. The OP was saying the photovoltaic industry wouldn't be at where's it is today without the space program and it could be even further along if we dedicated more resources to space. Their value of the space program was explicitly defined by it's side effects. They made no claim that the space program was implicitly good for it's own sake. They never claimed we "should be going to outer space anyway," they claimed if we had dedicated more effort to fiddling around in space we'd be closer to replacing coal plants with PV.
>"If we'd put more efforts into settling space, the demand for photovoltaics would have been higher. That might have pushed us down the learning curve faster and PV might have started turning coal power plants into stranded assets in the aughts or even the 90's instead of the teens."
They mentioned nothing of value inherent to exploring space but they certainly imply the real value is in "turning coal power plants into stranded assets." Space exploration is only a means to that end, not an end unto itself.
Can you point to anything in that statement that implies space exploration is (in your words) the intended direct effect? I think you're layering your own bias/values into their statement rather than taking their statement at face value.
I get where you’re coming from, but I think that’s wrong given the context. The OP was in response to someone saying they wish we didn’t spend so money on the space program. So we’re starting from a place where whether or not it is imperative is being questioned, and in response they pointed to its tangential effects.
Sure. But if those two groups can never see eye to eye it makes sense: one group feels good for moving towards an end goal, the other group gets positive side effects from relevant progress. Everyone wins.
To me there is no question about it, putting all eggs in one basket is always bad and diversification is good and the only reason not to explore space is short sighted thinking ("I personally don't get to reap the results in my lifetime so it is a waste to me"). Environmental issues on the planet also suffer from this.