What's your definition of "hand-written letter", Korbl?
In my world, that's the physical object, not the information it contains.
To get a physical object from Chicago to New Jersey as fast as possible, you need horses, cars, rockets or
Flumble wrote:Another way to quickly deliver the letter, is not to increase velocity, but reduce the distance. Detonate some (nuclear) explosives far beneath the surface, attach a great number of rockets beneath the city and you can move New Jersey near Chicago within the hour.
Yet another way is reducing the perceived time. Just detach the Earth from Chicago and New Jersey and move the planet around at 99.99999% the speed of light, while the pony express delivers the letter. After reattaching the Earth, the letter is delivered within 2 minutes. Alternatively, you can introduce a (cluster of) black hole(s) to achieve this dilation.
or better yet:
keithl wrote:The earth orbits the sun at 30 km/s. An object falling from the Oort cloud in a retrograde parabola moves at 45km/s near earth's orbit. A long dense object could travel through the atmosphere at 75 km/s. We will need two of these.
The great circle distance from Chicago to Hackensack is 1140 km. A straight trajectory from one to the other would pass 25 km beneath Rome, Ohio. We don't want to dig a vacuum tunnel, it might encourage Mom to visit too often.
The letter is written at the top of the Sears Tower, and placed in a kevlar vacuum container on a collapsing shock mounted flat platform inside a capsule. The first boloid is aimed to pass through the tower, smack the container, which crushes around the letter capsule. The capsule bounces towards a glancing deflection off the second boloid passing over Rome. The remants of the capsule bounce towards a tall building in Hackensack where Mom is held hostage by suicidal postal workers.
Elapsed time for delivery, 16 seconds. If the letter is asking Mom for money, it may not accomplish the intended result.