english: Allan McRobie is a bridge engineer from Cambridge who wrote to me, suggesting that a bridge simulator ought to wobble in the same way as the real bridge -- provided we hung it on pendulums of exactly the right length.
non_english: Alan Mcrobie Cambridge den bana yazaqn bir kopru muhendisi, kopru simulatorunun sallanmasi gerektigini oneren tipki gercek kopru gibi -- sarkaclardan dogru uzunluklarda taktigimiz surece.