相较 Native App，Web App Coding 有哪些优势？
Anyone with a text editor and a browser can do it.
You can learn the basics and actually publish a website in a weekend, as an amateur, without much trouble.
而如果你要做一款原生本地的 iOS app，要麻烦的多（Making a native iOS app, by contrast, is difficult and time consuming）：
you have to pay Apple $99;
you have to download XCode and learn how to use it, along with a strange language called Objective-C;
you have to create, sign, and upload certificates;
you have to compile your code and figure out how to run it on your device;
and you have to publish it for others to see, which requires navigating all the rules, regulations, and technical issues surrounding the App Store.
这本来又是一篇关于 Productivity 的文章。
“I would like to write another book for children but I spend all my spare time just answering the letters I get from children about the books I have already written. So it looks like a hopeless situation unless you can start a movement in America called ‘Don’t write to E. B. White until he produces another book.’”
I’m sorry this letter has been put off for so long, but there has been serious illness in my family and I have let things slide in consequence.
I assume you were disinclined to exhibit it, but I think the letter belongs to Cathy and if you’ll send me her address I’ll return it—she might like to have it about twenty years from now when she can fully understand what it is all about.
Cathy, as I recall it, asked me why I had not written another book for children, so I told her. (I don’t always tell the exact, whole truth to children, but my tendency is to do just that.)
Cannot be more right.