There are 3 engineers discuss about their country's technology, one from America, one from UK, and another from Indonesia.
First engineer from America dig until 1500 meters deep, and he found cooper, then he say 1500 years ago America have telephone technology.
Second engineer from UK dig until 2000 meters, and he found glass, then he say 2000 years ago UK have optical technology.
The third engineer from Indonesia dig until 3000 meters, but he didn't found anything, then he dig again until 3500 meters deep, still he didn't found anything and with proud and full of confident he say ," 3500 years ago Indonesia have wireless technology"
I'm sorry, it just an Indonesian engineer's joke that i want to share with all of engineer that read this joke, a little fun time beyond engineering job.
Smile and have a little fun.
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