I've heard that it's not good to use the same board for vegetables and meat, not only when you are making a salad but in general. Something about the bacteria in dirt and the bacteria in the meat is a bad mix.

But I'm wondering if you are making a stew of some sort, where you need to boil both meat and vegetables together, can I safely use the same board for both?

I'm thinking since it will be cooked together anyways, what danger can there be?