"What would happen if people had access to a publicly available time machine? Not a private invention in the sole ownership of a Traveller, as in the famous novel by Herbert Wells, not a Machine controlled by a single Company as in Ray Bradbury… a ticket for which only the wealthy can afford, but a time machine with a lowercase 't,' used by travelers with a lowercase 't.' Workers, small businessmen, clerks… Not a few, but millions. Not the chosen, but anyone at all. You simply go to a shop, buy it for a modest sum, bring it home and switch it on. How will people make use of such a device? Which eras, which events and figures will interest them most? And what must the machine be like so that the hundreds of thousands of travelers departing into the past every day do not alter the events of the present?"