I still remembered that pointless story (Ok, maybe I just don't see his point) my prof told in the first day of computer networking course. He asked something like "How to send a lot of data down the road to another computer?" The answer turn out to be copy the data on tape and carry the tape by walking.
The math of sending 1GB, in today's standard:
By internet: assumpting DSL (~150KB/sec for me), 1000MB = 1000000KB / 150 = ~6666 sec = 111 minutes
By walking the DVD: burning DVD ~ 20 minutes, walking 15 minutes (~1 km in city), total 35 minutes! (or 5MB/sec!!!!)
Of course, this depends on how much data you are sending and how far you're sending it to.
It must be the best kept secret on the net about how to have great throughput.
新無線通訊
My passion has always been on software development, and I know it since I
wrote my first program on an Apple II. I worked on cellular wireless system
in the past (C/C++) and now focus on web application
(LAMP, PHP, MySQL, CakePHP, Symfony, jQuery, Google AppEngine/python).
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