The second piece of evidence pointing to is the eccentric orbit of anexisting planet around the star, which is in an orbit not normally expected in this type of system.
Apple's challenge is that getting people to buy an iPod, a new type of device, is easier than getting them to switch loyalties in anexisting product category.
No one now knows how easy it would be to turbo-charge anexisting human pathogen, or take one that infects another type of animal and assist its passage over the species barrier.