This is a great article! A good assessment of how the grid might be used to cause less mental strain for the developer. I've just started using grid in practice

This is a great article! A good assessment of how the grid might be used to cause less mental strain for the developer. I've just started using grid in practice, although already very useful then this article adds good insights into naming things and also on the design vs markup topic. If I may nitpick on your nitpick :), then I don't think span isn't "funnily" not the same as the start/end columns -- if you want to span some number of columns then it shouldn't say "span 2" when you mean to span one.