[quote=@vancexentan]
He isn't angry. He isn't shouting. He's complaining and he's annoyed since by his point of view there's no reason to risk the chance rather than just walk more. His voice is raised to only make sure people hear him nothing more so. 
[/quote]
The way it's written makes it seem as though Gerald spoke for about three minutes all at once, without stopping to take a breath or pausing at any time. He wanders from one point to the next without giving the others the chance to soak in each point and so it comes across as a long-winded rant. After the first twenty second they'd all have just started to faze out, not hearing the words as Gerald just kept talking.

A bit like my old Ethics professor. :lol