On 22 Dec 2013, at 01:00, Edgar Owen wrote:

Hi John, First thanks for the complement on my post!To address your points. Of course we do have some knowledge ofreality. We have to have to be able to function within it which wemost certainly do to varying degrees of competence. That is proof wedo have sufficient knowledge of reality to function within it.Yes, computations include logic as well as math.

`Computations is only a very tiny part of arithmetic and thus of math.`

`Logic is something else, despite many i-rich interrelation with`

`computation and computability theory.`

`Computability can be represented in term of a very special case of`

`provability, and provability can be represented as a very special case`

`of computability, but those notion are very different and non`

`isomorphic.`

`Proof and mathematical theories are never universal. For`

`computability, we do have universality (that's why universal purpose`

`computer exists).`

Bruno http://iridia.ulb.ac.be/~marchal/ -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.