XPost: sci.logic, comp.theory, sci.math   
   From: tristan.wibberley+netnews2@alumni.manchester.ac.uk   
      
   On 17/11/2025 03:49, olcott wrote:   
   > On 11/16/2025 8:21 PM, Tristan Wibberley wrote:   
   >> On 17/11/2025 01:02, olcott wrote:   
   >>> On 11/16/2025 1:56 PM, Tristan Wibberley wrote:   
   >>>> On 16/11/2025 05:13, olcott wrote:   
   >>>>> On 11/15/2025 10:09 PM, wij wrote:   
   >>>>>> It is you who don't even understand the logical 'if',   
   >>>>> It it ridiculously stupid of you to say that   
   >>>>> I do not understand logical if.   
   >>>>   
   >>>>   
   >>>> To what does the phrase "logical if" refer?   
   >>>>   
   >>>>   
   >>>   
   >>> p → q is the classic if p then q   
   >>   
   >> No.   
   >   
   > Yes: https://math.hawaii.edu/~ramsey/Logic/IfThen.html   
      
      
   Natural If ... Then is closer to an LJ sequent => in intuitionistic   
   formalisms and that's definitely different from → in the face of, for   
   example, axiom extensions of a system.   
      
   If ... Then as described at the top of the resource you referenced is   
   real-world effect and that's another different thing. There are many   
   basic demonstrations of how that is not →.   
      
      
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   Tristan Wibberley   
      
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