To be honest, that article and the articles like it bother me. Krafcik said there will always be constraints, without spelling out what those constraints will b

To be honest, that article and the articles like it bother me. Krafcik said there will always be constraints, without spelling out what those constraints will be or their severity. Then the author wrote a line saying they won't work in the snow or rain (implying any snow or rain at all). To me, that assertion doesn't follow from the quote. Where did Krafcik say that they won't be able to deal with light to medium rain? Where did he say that they won't be willing to deal with light to medium snow? There are a lot of other articles asserting these things, but few detailed quotes.