So the challenge for Microsoft is multifaceted: it must prove that its tablets can do more than any other available and it must also demonstrate that the PC is still the best way of doing something, while conceding that it is no longer the only option. And all this while the world is moving inexorably towards a very cheap or free software model that is primarily web-based. Little wonder Windows 10 looks like a better melded hybrid between old versions and new ones, bringing back the Start Menu but combining it with the tiles of Windows 8. The claim is that it will end the split between old desktop and new look.