"But you are supposed to be semantic when handing out classes and ids." Yes, in order to achieve certain goals, not because there is some absolute Platonic ide

"But you are supposed to be semantic when handing out classes and ids." Yes, in order to achieve certain goals, not because there is some absolute Platonic ideal correctness about it. A question, then is does the pragmatic use of grids to more easily obtain certain layout goals end up making things worse in the long run. Adherence to semantic purity may be a case of premature optimisation.