Future pen

Our current pen has many shortcomings. For example, if the pen is broken or there is no ink, it has to be changed; if the typo is written, it is not easy to change... I think the pen in the future will overcome these shortcomings.
Future pens will have more features. Let me introduce you to you.
Automatic writing pen - the pen can automatically write and guarantee the correct word.
It will shine brightly - in the evening, the pen can replace the flashlight lighting, and when you buy something, you can also use the money detector to check the authenticity of the banknote.
Correct the error pen - if you write a typo, the pen will tell you "you wrote the wrong word, please correct it immediately."
Self-defense weapon pen - if you have a bad egg, you will become a bomb to blow the bad guy out of the body. If you press the self-defense 2 pen, it will become a pistol and kill the bad guy; when you press the self-defense 3, it will become a electric stick and the bad guy will be injured. .
Bigger and smaller - if your pen case is too small, you can make the pen smaller and put it in, and then change it back when you use it.
Internet-enabled pens - if you are tired of learning, or when you are free, you can use the pen to surf the Internet. You can also download the game software inside, you can play the Xaar or Plants vs. Zombies game.
Bring your own music pen - you can learn and listen to music while you are in a bad mood, relax.
I like the pen of the future, what about you?