Why Theory?

LDRLB

Their engineers set out to eyeball every bomber they could, gathering data on each bullet hole. After analyzing the results, engineers decided to reinforce the areas that had the highest concentrations of holes with armor plating. Perplexed, the engineers assumed that the extra plating had made the planes too heavy, and that the difficulty in handling the planes was offsetting the protection of the armor plating. This is where theory comes in. Why Theory.