The author of Hamlet, printed in 1603, believed that the center of the earth was a mass of molten matter, since we find the words "Doubt that in earth is fire,..... but do not doubt I love." Act 2, Scene 2.

In 1604 Francis Bacon wrote a tract called "Cogitatones de Natura Rerum," in which he states that the center of the earth is cold. The same year there was a second edtion of Hamlet, and here we find that the author has also changed his opinion, because the line "Doubt that in earth is fire" is altered to "Doubt that the stars are fire."
Is it a coincidence that Francis Bacon and the author of Hamlet both changed their opinion about what the center of the earth consisted of in the same year?