A few major concerns with this article the opening paragraph says unequivocally that Newton discovered calculus in this early notes years before Leibniz however this is not a solid historical fact in my opinion This is based on the reports of newton s own inner circle who claimed that Newton showed the calculus to them These very men had obviously taken Newton s side in a bitter debate that had seen Newton actively try to obfuscate the issue Newton even anonymously wrote the concluding remarks in the report by his own Royal Society whihc claimed Leibniz a fraud and Newton the true discoverer It should be added to the opening paragraph that the dates of Newton s first use of the calculus are based on the witness accounts of Newton s close confidants