Not in the case of foreigners trying to express themselves in English, though, because they might be applying their mother tongue structure as they write.

Even if you use words that won't appear in dictionaries, as you are basing in your language's structure, (like in some child's game) it is like an equation that after a number of data it might be guessed.

What is very far from good translations, is the way that these sentences might build up a logical thought. I imagine that such thing belongs to a more psychological structure. And it is very far from being understood by a machine. For example, a poem.