We have no basis for the assumption at all. It furthermore rests on the additional assumption *that there is even a "physical" at all there.
We have observed that the universe is regular and that there is nothing special about Earth, as far as we know. That's quite a good basis for the assumptions, in my opinion. Although I am not completely sure what you mean by "physical" here.
I don't understand why, in the title of the linked article, possible information leak from black holes is referred to as "gravity not being constant". Nor I understand what this has to do with induction or falsificationism.
We have observed that the universe is regular and that there is nothing special about Earth
The Copernican Principle has served us well. Ironically, it turns out it was somewhat misguided about the Earth itself. I don't believe that out of the single-digit percentage of planets yet discovered that are categorized as "Earth-like", that any of them fall particularly close on the parameters relevant to "humans would be comfortable living here if they brought the right flora and fauna with them Spore-style"). Certainly none of them have ...
Often, there are questions you want to know the answers to. You want other people's opinions, because knowing the answer isn't worth the time you'd have to spend to find it, or you're unsure whether your answer is right.
LW seems like a good place to ask these questions because the people here are pretty rational. So, in this thread: You post a top-level comment with some question. Other people reply to your comment with their answers. You upvote answers that you agree with and questions whose answers you'd like to know.
A few (mostly obvious) guidelines:
For questions:
For answers:
This thread is primarily for getting the hivemind's opinions on things, not for debating probabilities of propositions. Debating is also okay, though, especially since it will help question-posters to make up their minds.
Don't be too squeamish about breaking the question-answer format.
This is a followup to my comment in the open thread.