You've made the assumption that the laws of physics allow for something that also exhibits our same behavior but in a purely non-biological organism. I see no r

You've made the assumption that the laws of physics allow for something that also exhibits our same behavior but in a purely non-biological organism. I see no reason why this must be so. The laws of physics are not entirely understood and neither is the brain. Even granting your premise that the laws of physics allows for such a thing you've also made the assumption that humans are intelligent enough to "built something else that also exhibits our same behavior but is a purely non- biological organism". You presumably don't think a dog could invent such a thing but are assuming evolution has given humanity the ability to do so.