why are some people so stupid to think that a billion is 1000000000?

In some countries a billion is (english speaking countries) = 1,000,000,000.-

In other countries a billion is (as you say in Germany, France, in all spanish talking countries and others) = 1,000,000,000,000.-

Both are correct because is just a way of how they named that number but of course we have to be very careful and see if the person is english speaker or not.

---Addition---

Another difference, in some countries they write 1.000.000.- , or 3,141592 and in other countries they write 1,000,000 and 3.141592

I could ask the same question of you. Why do many people think that the a billion is 10 times 100 thousand million (i.e. 10^12), when everyone should know it's 10 times 100 million (i.e. 10^9)? We out number you, you know. And when expression numbers 10,000 and higher, it's a good idea to use commas.

It IS a billion to most of the English-speaking world. We use the "short scale" while most of Europe uses the "long scale." Learn something before you start calling people stupid. The links below explain the difference.

that IS a billion to us.

http://en.wikipedia.org/wiki/Billion

http://en.wikipedia.org/wiki/Semantics

why does it make you so mad?

does this make you mad too?

Aluminum

not Aluminium

Why are the English harder to understand?

It is their language.

Why do the French speak without moving their lips?

Why are all Canadians terrorists?

1,000,000 Million

1,000,000,000 Billion

1,000,000,000,000 Trillian

SO then name all these:

1,000

1,000,000

1,000,000,000

1,000,000,000,000

1,000,000,000,000,000

AWSOME!!!!!!