>> Ponder`

hey hey,
put on your thinking cap and think about this for a moment.
what makes us (humans) develop more and more advanced communication devices?
well, when I attended lecture this morning,
my lecturer mentioned something about being effective and efficient.
I guess that’s part of the reasons.

can you think of other reasons for the advancement in communication technology?

what about this?
In the past, where people still live in the era like the Tang or Qing Dynasty,
these people will communicate with each other using the pigeons as their “postman” <飞鸽传书>.
Try to imagine in the present day without internet, emails, facsimile, mobile phones, computers, etc..
what do you think will happen?

Well,
whenever you look up in the sky,
you can see millions and millions of pigeons flying around,
with the messages that we want to deliver to the other party.
with all the pigeons in the sky,
we will be fretting over bird-droppings that may hit on us..
worse of all..
Airplanes will not be able to fly passengers around the world.
moreover, what will happen if our pigeons are lost?
will our pigeons turn into a delicacy by some tribal troupe?

Hence,
to avoid that from happening..
we humans have developed advanced technology like mobile phones, internet, emails for us to communicate with people from all over the world.