If there were no correlation between prosperity and distance from the equator, we would expect the green line to be centered at zero with random oscillations due to noise in the data.
When it reaches a new victim, the virus searches for addresses to despatch itself to and also picks a random e-mail address for the 'from' line to cover its tracks.
To protect Pearson's interests as a minority shareholder, if Bertelsmann declines a Pearson offer to sell its entire shareholding, Pearson may require a recapitalisation by which Penguin Random House raises debt of up to 3.5x EBITDA, with a dividend distributed to shareholders in line with their ownership.