The main point is that every child should learn keyboard typing nowadays. 

The reason I say this is that keyboard typing is the best way to deliver one's mind to the digital world. It likes a brain-machine interface, but without any hurt to our body.

What matters is not how we express with keyboard fast, but how we express with keyboard fluently.  

It may seem that keyboard typing is very simple and everyone can manage it in a short time, but actually I've found that many people cannot type with right fingers, even not mention typing without seeing the keyboard. 

Even if we will have a much better voice typing tool, it doesn't necessarily mean that keyboard typing will become useless. The key question is whether a typing method can express and frame opinions easily. Obviously, voice typing is more complex than keyboard typing.

A good example of this is coding with AI. Although we can use natural language to complete a programming task, most programmers are still using keyboard for its accurency.

Instead of expecting a better typing tool, we should let our children train the skill of keyboard typing. 

The main lesson I took from my entire life is that the most basic skills are the most important skills.

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The main point is that every child today should learn touch typing.

The reason I say this is that typing is still one of the most direct ways to turn our thoughts into digital text. In that sense, it works like a simple, non-invasive brain-computer interface.

What matters is not how quickly we type, but how fluently we can turn our thoughts into text.

It may seem that typing is so simple that everyone can master it in a short time, but actually I have found that many people do not know which fingers to use, let alone how to type without looking at the keyboard.

Even if we have much better voice-typing tools in the future, it doesn’t necessarily mean that touch typing will become useless.

The key question is whether an input method makes it easy to express and organize our thoughts. For complex ideas, it is often harder to edit, rearrange, and review our thoughts through voice input than through typing.

A good example of this is coding with AI. Although programmers can now use natural language to complete many programming tasks, most of them still use keyboards because typing gives them greater precision and control.

Instead of waiting for a better input tool, we should help our children develop fluent typing skills now.

The main lesson I took from this is that basic skills often become more important, not less important, as technology advances.