I think the song refers to several Italian scientists of the renaissance: first Leonardo da Vinci, who was asked to make an equistrian statue for the Duke of Milan, but did not finish it as it was umstable; then Gallieo who proved the earth rotated around the sun, but was walking on glass doing so; and finally Columbus who proved there was no end to the world where you and your ship could fall off. There are more hints, I think to Leonardo.
I think the song refers to several Italian scientists of the renaissance: first Leonardo da Vinci, who was asked to make an equistrian statue for the Duke of Milan, but did not finish it as it was umstable; then Gallieo who proved the earth rotated around the sun, but was walking on glass doing so; and finally Columbus who proved there was no end to the world where you and your ship could fall off. There are more hints, I think to Leonardo.