if we confess that 'right' lives in a world of physics and logic - because everything lives in a world of physics and logic - then we have to translate 'right' into those terms somehow.

A different perspective i'd like people's thoughts on: is it more accurate to say that everything WE KNOW lives in a world of physics and logic, and thus translating 'right' into those terms is correct assuming right and wrong (fairness, etc.) are defined within the bounds of what we know.

I'm wondering if you would agree that you're making an implicit philosophical argument in your quoted language -- namely that necessary knowledge (for right/wrong, or anything else) is within human comprehension, or to say it differently, by ignoring philosophical questions (e.g. who am i and what is the world, among others) you are effectively saying those questions and potential answers are irrelevant to the idea of right/wrong.

If you agree, that position, though most definitely reasonable, cannot be proven within the standards set by rational thought. Doesn't the presence of that uncertainty necessitate consideration of it as a possibility, and how do you weigh that uncertainty against the assumption that there is none?

To be clear, this is not a criticism. This is an observation that I think is reasonable, but interested to see how you would respond to it.