Historian: Newton developed mathematical concepts and techniques that are fundamental to modern calculus  Leibniz developed closely analogous concepts and techniques  It has traditionally been thought that these discoveries were independent  Researchers have, however, recently discovered notes of Leibniz' s that discuss one of Newton' s books on mathematics  Several scholars have argued that since <b> the book includes a presentation of Newton' s calculus concepts and techniques, </b>and since the notes were written before Leibniz' s own development of calculus concepts and techniques, it is virtually certain <b> that the traditional view is false  </b> A more cautious conclusion than this is called for, however
Leibniz' s notes are limited to early sections of Newton' s book, sections that precede the ones in which Newton' s calculus concepts and techniques are presented
The first provides evidence in support of a position that the historian defends; the second is that position.