We have no choice: we must excavate, first because whole continents are still barely known from an archaeological point of view, and second because thousands of archaeological sites disappear every day as a result of economic development. Rescue or preventive archaeology is thus an ethical duty. Nevertheless, there is a serious risk of a split between academic archaeology, with its wealth of thinking but poverty of funding, and commercial archaeology, where the situation is the opposite and the goal is, above all, financial profit. So the question is not just to know why one excavates, but also how.