[epivosism]

You're acting as if it's not possible to steelman the case against invasive species. This is a bit disingenuous.

Imagine we discover an alien planet with no predators. Should we allow ecological merging, with reasonable expectation of large biodiversity loss?

I'm not an absolutist; there are opposite examples - imagine that in the far future Australia were about to finish its tectonic journey to touch another continent and we expected new connection to result in massive ecological disruptions. Trying to prevent such a thing forever would be questionable.

The point is: you have to dig into reasons and outcomes, and can't resolve this kind of debate by simply saying "foreign bad" or "foreign good".

[jefflombardjr]

I 100% agree with you. You absolutely "can't resolve this kind of debate by simply saying "foreign bad" or "foreign good"

Imagine we discover an alien planet with no predators. Should we allow ecological merging, with reasonable expectation of large biodiversity loss. The problem is, the alien planet doesn't have a pesticides industry propped up around saying "foreign bad"

But I have no idea, and am not qualified to answer that hypothetical.