Turnabout is fair play
…could, perhaps, have turned the Blitzkrieg’s armoured thrusts into smoking ruin… — FWIW, the original Connie had a single tail, had dire handling due to (IIRC) masking by fuselage during turns. The inspired re-design made it a Classic. And, um, few aircraft use DeLanne system because the spacing is very tricky to get right, modern wing designs are better and commercial aircraft can unfold all those slots, flaps etc, which have a similar effect…