One of Gen. Curtiss LeMay's contributions prior to leaving for the Pacific was the "Bomb on Lead" tactic. Instead of each bomber lining up on the target & dropping on it's own bombardier's signal, the bombers would all drop simultaneously when the lead bombardier in the lead bomber signalled 'drop'. Bombing on the signal of a Master Bombadier had better effects than having everybody taking their best shot regardless of experience or skill.
My point was that the Norden bombsight simply wasn't up to delivering the load onto a set of railroad tracks or specific buildings.
How Dubya could have been unaware of this and made such a statement ..."We should have bombed...".
I would have expected such a statement from Jon Carry or Slickwillie, the Bride at every wedding, the dead guy at every funeral, but Dubya was trained as an Air Force officer and pilot.
Shirely he was aware of the volumes of post WW2 studies we did on the effectiveness of air campaigns?