TIME TRAVEL. Cal Pundit weighs in with some destinations and people. Be careful what you wish for. Here's a hypothetical: you get a time machine, you transport yourself to one of the great amusement parks of the 1920s to ride one of the extreme roller coasters of the day, and you cut yourself, or perhaps you're exposed to someone with a contagious disease, and you die account today's antibiotics (not to mention vaccines) haven't yet been invented.