There's a saying that the best jokes are somewhat offensive if not very witty, and ChatGPT might be playing safe lol.
> She couldn’t tell a difference. My husband and I could tell it was different [...]
I wonder if the child will eventually be able to tell the difference, when the machine-generated audio is a large fraction of what they hear in their early years. Or if they just learn to consider that 'normal', and maybe model their own speech patterns after it.
Also, anecdotes from parents (is that what you're referring to by "clear empirical evidence"?) are not evidence.
https://www.greatschools.org/gk/articles/word-gap-speak-more...
There exists an interpretation of that statement that makes it a tautology.
Edit: and/or makes it circular/symmetrical - "What is a "kid"" (a Turing test mis-labeller). A good AGI was required to be able to convince a panel - assuming an ideal panel, the usual simplification "employing" perfect agents in economic modelling -, and there now exist new means to conversely assess the panel.