(urth) Sundial with "multitudinous faces"?

[Jeff Wilson]

On 5/13/2011 2:26 PM, Jerry Friedman wrote:
>> From: Jeff Wilson<jwilson at io.com>
>> There are numerous relativity-compatible physics models that seem to allow for
>> time travel
>
> Except the law that says there's no negative mass.
>
> I just made that law up, but sometimes the way these things work is that they

If and when that come to pass, there will be slightly fewer methods of 
time travel that don't violate known laws. This number may recover as 
further new discoveries are made.

-- 
Jeff Wilson - jwilson at io.com
Computational Intelligence Laboratory - Texas A&M Texarkana
< http://www.tamut.edu/CIL >