[ExI] energy and food was invisible singularity and SU

[Keith Henson]

On Sat, Sep 18, 2010 at 5:00 AM,  BillK <pharos at gmail.com> wrote:

> On 9/17/10, Keith Henson wrote:

>>  The one on food, for example, didn't even have a clue about the number
>>  of square meters it takes to grow food for one person.  For a human
>>  density like that found in cities it is *impossible* to grow enough
>>  food for the people who live there.
>>
> Living Towers are already being designed.
> <http://www.verticalfarm.com/>
> Among the benefits claimed is:
>  Year-round crop production; 1 indoor acre is equivalent to 4-6
> outdoor acres or more, depending upon the crop (e.g., strawberries: 1
> indoor acre = 30 outdoor acres)

Bill, if I explained the energy flows involved and areas required
would it make any difference?

Keith