I disagree. Mandarin isn't a very hard language. Chinese writing, however, is very much harder than English writing to learn... But even then, once you have a thousand characters or so down, the rest are a lot easier to learn.

wtf???

How would you know what the most common mistakes are with Chilean speakers of English? Do you speak in English much to Latinos? I've met a great deal of foreigners, and I am most impressed with the English of continental Europeans. South Americans don't tend to have great English, and neither do Asians, where Japan seems to have the best speakers, disregarding pronunciation.

I have a few Chilean friends, and they do tend to make a lot of mistakes.

And just in case you think that your English is perfect, you should know that it is not. Here are some corrections:

"like an poorly" should be
"like a poorly"

You should have a comma like so:
"excuse my poor english," since
OR
"excuse my poor english", since
depending on style guide. Basically, you need a comma there.

"poorly educated American would fool people"
should be
"poorly educated American, you would fool people"
Missing comma and not reiterating the subject (you) in the second clause.

In fact you are an arsehole for judging where someone is from simply from how they typed. Guessing is fine. Making a solid judgment and believing it to be true... not so fine. You are a complete idiot in fact.

From your obnoxiousness, I am certain that you are not human, and would never believe you otherwise. Humans just aren't that stupid.

It has depreciated. Back in 1976, an "s" took up 1B/100KB on my floppy disk. That was 16,000 words - a novel could take 10 to 20+ disks. Say, out of those 16,000 words, I used the possessive form of a name ending with 's' about 100 times. By using "...s'" instead of "...s's" I could save 100B, adding about 16 words to a disk (0.1%). Vice versa, adding the 's' would cost me 16 words on a disk, extend the novel by a disk, and make it not fit in my standard package! Costing me an extra 50c in postage!!

That extra 's' had a truly quantifiable cost.

Now, the 's' has depreciated so much that I can use them very liberally, and never have to worry about the cost using them. It was in 1986 that my novels stopped saying "Ross' banana" and now say "Ross's banana". Only a few of my readers noticed the change, and fewer still were confused by it.