As far as I'm aware, they're fine. I haven't heard any arguments that counter them, but it's not an issue that I've looked at in any detail.
On November 30th, 2017. See this statement in context.
On November 30th, 2017. See this statement in context.
November 30th, 2017 / 9:45 a.m.
Associate Professor, School of Environmental Studies, University of Victoria, As an Individual
As far as I'm aware, they're fine. I haven't heard any arguments that counter them, but it's not an issue that I've looked at in any detail.
See context to find out what was said next.