Can I ask a nieve question? Why would OpenAI volunteer to give credit / share authorship if they believe they indeed solved the problem independently and in a

Can I ask a nieve question? Why would OpenAI volunteer to give credit / share authorship if they believe they indeed solved the problem independently and in a different way? Based on how they seem to operate in general, this smells more like CYA than it does being honorable, but that's my bias.