Last Week's Question - - Ok, historical landmarks are great. Signs that tell us about historical landmarks are dandy too (Hooray for background information, no?). But do we really need signs on the road to tell us that "Historical Landmark Signs are Ahead?" (And yes, some states have them)

Ian P. - yes, I don't know about you but when i see a sign for a landmark i get really excited and usually slam on brakes. So the signs telling me that on eis comming help really do help me prepare for the amazing historical monument that I could not live without.

Mark D. - You definitely need them if you intend for someone to steal them and hang them in their apartment and/or townhouse.

This Week's Question - Time travel: one of the most fantastic and confusing science fiction ideas ever. Heroes and villains zooming off all over time and space with dastardly plans for disaster or mind-bending solutions of salvation. What I'm interested in is not the where, why, and how of time travel, but rather, the what, as in, what kind of vessel/car/phone booth/perfectly rounded sphere is used hurl through time? If you were to build a time traveling device in your spare time, what kind of configuration would you use and why?