I've mentioned this before - but for me the test is AIs developing their own languages to cooperate together on tasks. If those languages start to incorporate n

I've mentioned this before - but for me the test is AIs developing their own languages to cooperate together on tasks. If those languages start to incorporate notions of self, time and space, then you can conclude something interesting is happening. Of course, you would need to decipher the languages - they can't be human supplied.