Theos-Talk Archives (January 1997 Message tl00316)

On Sat, 11 Jan 97, Bart Lidofsky <bartl@sprynet.com> wrote:

>	You can say that lemons are purple, but that won't make it true.

If lemons are purple, then calling them yellow would be objectively wrong.


>take the following: -500 = -1000. Is that correct? If you are talking about temperature in the Farhenheit scale, then yes, it is. 

If it is correct now, without any physical changes, when might it become
incorrect?


>Even the concept of addition is not constant: what do
>you get when you add 3 to January 2, 1997? 

Assuming you meant subtract, no mathematical laws are ever going to change
which will change the result.  Dating systems might change, but not the
laws of mathematics which they use.