When you're working a dough (kneading or rolling out), instructions often say to flour the surface you're working on and your rolling pin or hands. This helps the dough to stick less. However, I always am very careful that I don't use too much flour, because I'm afraid this will change the recipe. Is this fear irrational or would I need to use a lot to have an effect on the result? Is there a certain percentage of original amount of flour that you can't surpass?
I'm particularly asking about bread dough, but I think this will also apply to other doughs. I guess it would have more rapidly an effect on wetter doughs in general, but I'm not sure. So feel free to include broader answers.