You have an ink stamp that is so amazingly precise that, when inked and pressed down on the plane, it makes every circle whose radius is an irrational number (centered at the center of the stamp) black.

Is it possible to use the stamp three times and make every point in the plane black?

If it is possible, where would you center the three stamps?

Wait until the flight attendant is distracted, then sneak up to the "plane lighting and illumination" button, and use the stamp to press down on the off button. The entire plane will go black. :-)

Posted by Penny on 2003-12-04 07:54:17