Talk:Left recursion

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[edit] pitfalls needs improved example

The pitfalls section uses the example of left recursion (a+a)+a and right recursion a+(a+a), but these have the same value. Should be changed so one of these is a '*' instead of a '+', such as (a+a)*a vs a+(a*a). (But I'm not comfortable enough at this moment to make that comprehensive a change and be sure of gettign the trees drawn exactly right.)