He discusses his theory of "the worst thing which could happen" in what in biology class would be called a punnet grid, which illustrates all the possible outsomes when considering 4 aspects such as in this example.
I think his argument is a valid one as he regards each and every consequence that could happen, making his theory unbiased.
Consequently, he comes to a realisation that if nothing is done about a grave problem such as global warming then "the worst" could actually happen. His video is emotional and an eye-opener for many, even though I had been exposed to the theory of global warming before. The reality and the urgency of the situation was highlighted and I felt like something must be done in order to restore faith in the global population.
