Grab the popcorn! Landsburg and I go at it again! (See also Previous Landsburg LW flamewar.)

This time, you get to see Landsburg:

• attempt to prove the existence of the natural numbers while explicitly dismissing the relevance of what sense he's using "existence" to mean!
• use formal definitions to make claims about the informal meanings of the terms!
• claim that Peano arithmetic exists "because you can see the marks on paper" (guess it's not a platonic object anymore...)!

(Sorry, XiXiDu, I'll reply to you on his blog if my posting privileges stay up long enough ... for now, I would agree with what you said, but am not making that point in the discussion.)