You've been transported back in time to an age of formidable fortresses, epic sieges, and super-scary diseases How will you make it out unscathed? Do you think you have what it takes to dodge flying arrows from longbows? Or 1,000-pound stones flung at you from trebuchets? OK, maybe you're great at dodgeball, so you think you've got that down, no sweat. But how about something smaller and unseen, like the deadly bubonic plague? FYI,...