First, that should be "it isn't speciation."
Second, it is speciation. Biologists don't tell you how much soda goes into a Big Gulp cup, and convenience store clerks don't get to define what speciation means.
Did you read your own article by chance? The part that talks about only four possible instances being on file and why.
The number of observed speciation events is greater than zero, therefore your argument that speciation does not occur is incorrect.
Check the dictionary. Ain't is a word. Didn't used to be. Get over it.
Second, if you wan't to knitpick english, go to an english thread.
Third, if you want to prove speciation, prove it. That doesn't consist of Corn producing Corn. It consists of Corn producing non-corn. Macro-evolution in other words.. perhaps you've heard of it...
Lastly, the number of observed "claimed" speciation events is greater than 0. The number of actual is Zero, has been zero since Darwins time and will likely evermore remain zero unless someone starts playing in a lab in which case you'll have design, not speciation. Corn becoming corn isn't speciation. Propaganda thusly routed. Next attempt.