I've gone over this argument at such length because, I hope it's clear, I think it's a pretty interesting argument.

我用这么长时间研究这个论证,我希望是清楚的，是因为这是个很有意思的论证。

耶鲁公开课 - 死亡课程节选

One of the reasons for thinking it's not clear whether the argument fails or not is because it's hard to pin down, where exactly did it go wrong?

并不能确定这个论证是否成立,的其中一个原因就是,我们很难确定,到底是哪里出了问题

耶鲁公开课 - 死亡课程节选