On May 6, 2006, at 3:13 PM, John Adams wrote:
> On May 6, 2006, at 5:04 PM, Marta Russell wrote:
>
>
>> As my friend who IS a lefty here in LA says the world needs to
>> realize that at this point we need a ratio of 10 adults per one
>> child. He's done the math over years of study.
>>
>
> For how long do we need that?
Thank you for a civilized question. I don't know the answer. Brian is working on a paper which he hopes to publish. I could ask him next time I see him at a MR meeting and get back to you on that. Marta