I've been using Using Google AI to research something personal & I had discovered that I can ask that it 'remember' things. That way I can pick up the 'conversation' whenever I want and build on previous threads. I asked something this morning & it seemed to have 'forgotten', then when I 'reminded' it here was the response: "I apologize for the oversight on my part; I remember now that you shared..." ​ I'm confused as to why & how AI 'forgot'... can someone exp...